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Finding the Fourth Proportional to 731.92, 1,010.12 and 437.16

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Solution

The fourth proportional to 731.92, 1,010.12 and 437.16 is: 603.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.92 : 1,010.12 = 437.16 : x
  2. Step 2: Convert to fraction form
    731.92/1,010.12 = 437.16/x
  3. Step 3: Cross multiply
    731.92x = 1,010.12 × 437.16
  4. Step 4: Simplify right side
    731.92x = 441,584.06
  5. Step 5: Solve for x
    x = 441,584.06/731.92
  6. Step 6: Final answer
    x = 603.32

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Half scale
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Double scale
Find fourth proportional to 732.92, 1,011.50 and 438.16
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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.