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Finding the Fourth Proportional to 535.98, 739.74 and 303.12

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Solution

The fourth proportional to 535.98, 739.74 and 303.12 is: 418.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.98 : 739.74 = 303.12 : x
  2. Step 2: Convert to fraction form
    535.98/739.74 = 303.12/x
  3. Step 3: Cross multiply
    535.98x = 739.74 × 303.12
  4. Step 4: Simplify right side
    535.98x = 224,229.99
  5. Step 5: Solve for x
    x = 224,229.99/535.98
  6. Step 6: Final answer
    x = 418.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.