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Finding the Fourth Proportional to 160.76, 239.89 and 141.80

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Solution

The fourth proportional to 160.76, 239.89 and 141.80 is: 211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.76 : 239.89 = 141.80 : x
  2. Step 2: Convert to fraction form
    160.76/239.89 = 141.80/x
  3. Step 3: Cross multiply
    160.76x = 239.89 × 141.80
  4. Step 4: Simplify right side
    160.76x = 34,016.40
  5. Step 5: Solve for x
    x = 34,016.40/160.76
  6. Step 6: Final answer
    x = 211.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.