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Finding the Fourth Proportional to 332.69, 499.10 and 140.31

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Solution

The fourth proportional to 332.69, 499.10 and 140.31 is: 210.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.69 : 499.10 = 140.31 : x
  2. Step 2: Convert to fraction form
    332.69/499.10 = 140.31/x
  3. Step 3: Cross multiply
    332.69x = 499.10 × 140.31
  4. Step 4: Simplify right side
    332.69x = 70,029.97
  5. Step 5: Solve for x
    x = 70,029.97/332.69
  6. Step 6: Final answer
    x = 210.50

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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.