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Finding the Fourth Proportional to 140.92, 211.44 and 58.70

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Solution

The fourth proportional to 140.92, 211.44 and 58.70 is: 88.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.92 : 211.44 = 58.70 : x
  2. Step 2: Convert to fraction form
    140.92/211.44 = 58.70/x
  3. Step 3: Cross multiply
    140.92x = 211.44 × 58.70
  4. Step 4: Simplify right side
    140.92x = 12,412.38
  5. Step 5: Solve for x
    x = 12,412.38/140.92
  6. Step 6: Final answer
    x = 88.08

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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.