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Finding the Fourth Proportional to 332.02, 497.99 and 139.70

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Solution

The fourth proportional to 332.02, 497.99 and 139.70 is: 209.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.02 : 497.99 = 139.70 : x
  2. Step 2: Convert to fraction form
    332.02/497.99 = 139.70/x
  3. Step 3: Cross multiply
    332.02x = 497.99 × 139.70
  4. Step 4: Simplify right side
    332.02x = 69,569.20
  5. Step 5: Solve for x
    x = 69,569.20/332.02
  6. Step 6: Final answer
    x = 209.53

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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.