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Finding the Fourth Proportional to 240.79, 332.31 and 135.88

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Solution

The fourth proportional to 240.79, 332.31 and 135.88 is: 187.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.79 : 332.31 = 135.88 : x
  2. Step 2: Convert to fraction form
    240.79/332.31 = 135.88/x
  3. Step 3: Cross multiply
    240.79x = 332.31 × 135.88
  4. Step 4: Simplify right side
    240.79x = 45,154.28
  5. Step 5: Solve for x
    x = 45,154.28/240.79
  6. Step 6: Final answer
    x = 187.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.