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Finding the Fourth Proportional to 147.83, 220.52 and 129.47

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Solution

The fourth proportional to 147.83, 220.52 and 129.47 is: 193.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.83 : 220.52 = 129.47 : x
  2. Step 2: Convert to fraction form
    147.83/220.52 = 129.47/x
  3. Step 3: Cross multiply
    147.83x = 220.52 × 129.47
  4. Step 4: Simplify right side
    147.83x = 28,549.95
  5. Step 5: Solve for x
    x = 28,549.95/147.83
  6. Step 6: Final answer
    x = 193.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.