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Finding the Fourth Proportional to 734.43, 1,013.58 and 402.92

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Solution

The fourth proportional to 734.43, 1,013.58 and 402.92 is: 556.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.43 : 1,013.58 = 402.92 : x
  2. Step 2: Convert to fraction form
    734.43/1,013.58 = 402.92/x
  3. Step 3: Cross multiply
    734.43x = 1,013.58 × 402.92
  4. Step 4: Simplify right side
    734.43x = 408,388.14
  5. Step 5: Solve for x
    x = 408,388.14/734.43
  6. Step 6: Final answer
    x = 556.06

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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.