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Finding the Fourth Proportional to 511.49, 767.52 and 251.49

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Solution

The fourth proportional to 511.49, 767.52 and 251.49 is: 377.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.49 : 767.52 = 251.49 : x
  2. Step 2: Convert to fraction form
    511.49/767.52 = 251.49/x
  3. Step 3: Cross multiply
    511.49x = 767.52 × 251.49
  4. Step 4: Simplify right side
    511.49x = 193,023.60
  5. Step 5: Solve for x
    x = 193,023.60/511.49
  6. Step 6: Final answer
    x = 377.38

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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.