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Finding the Fourth Proportional to 500.40, 749.52 and 307.44

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Solution

The fourth proportional to 500.40, 749.52 and 307.44 is: 460.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.40 : 749.52 = 307.44 : x
  2. Step 2: Convert to fraction form
    500.40/749.52 = 307.44/x
  3. Step 3: Cross multiply
    500.40x = 749.52 × 307.44
  4. Step 4: Simplify right side
    500.40x = 230,432.43
  5. Step 5: Solve for x
    x = 230,432.43/500.40
  6. Step 6: Final answer
    x = 460.50

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Find fourth proportional to 250.20, 374.76 and 153.72
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.