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Finding the Fourth Proportional to 654.47, 902.71 and 402.27

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Solution

The fourth proportional to 654.47, 902.71 and 402.27 is: 554.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.47 : 902.71 = 402.27 : x
  2. Step 2: Convert to fraction form
    654.47/902.71 = 402.27/x
  3. Step 3: Cross multiply
    654.47x = 902.71 × 402.27
  4. Step 4: Simplify right side
    654.47x = 363,133.15
  5. Step 5: Solve for x
    x = 363,133.15/654.47
  6. Step 6: Final answer
    x = 554.85

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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.