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Finding the Fourth Proportional to 159.52, 240.40 and 135.76

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Solution

The fourth proportional to 159.52, 240.40 and 135.76 is: 204.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.52 : 240.40 = 135.76 : x
  2. Step 2: Convert to fraction form
    159.52/240.40 = 135.76/x
  3. Step 3: Cross multiply
    159.52x = 240.40 × 135.76
  4. Step 4: Simplify right side
    159.52x = 32,636.70
  5. Step 5: Solve for x
    x = 32,636.70/159.52
  6. Step 6: Final answer
    x = 204.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.