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Finding the Fourth Proportional to 352.97, 529.43 and 147.47

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Solution

The fourth proportional to 352.97, 529.43 and 147.47 is: 221.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.97 : 529.43 = 147.47 : x
  2. Step 2: Convert to fraction form
    352.97/529.43 = 147.47/x
  3. Step 3: Cross multiply
    352.97x = 529.43 × 147.47
  4. Step 4: Simplify right side
    352.97x = 78,071.66
  5. Step 5: Solve for x
    x = 78,071.66/352.97
  6. Step 6: Final answer
    x = 221.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.