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Finding the Fourth Proportional to 402.71, 555.26 and 375.17

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Solution

The fourth proportional to 402.71, 555.26 and 375.17 is: 517.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.71 : 555.26 = 375.17 : x
  2. Step 2: Convert to fraction form
    402.71/555.26 = 375.17/x
  3. Step 3: Cross multiply
    402.71x = 555.26 × 375.17
  4. Step 4: Simplify right side
    402.71x = 208,312.24
  5. Step 5: Solve for x
    x = 208,312.24/402.71
  6. Step 6: Final answer
    x = 517.28

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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.