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Finding the Fourth Proportional to 332.04, 497.90 and 139.48

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Solution

The fourth proportional to 332.04, 497.90 and 139.48 is: 209.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.04 : 497.90 = 139.48 : x
  2. Step 2: Convert to fraction form
    332.04/497.90 = 139.48/x
  3. Step 3: Cross multiply
    332.04x = 497.90 × 139.48
  4. Step 4: Simplify right side
    332.04x = 69,447.09
  5. Step 5: Solve for x
    x = 69,447.09/332.04
  6. Step 6: Final answer
    x = 209.15

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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.