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Finding the Fourth Proportional to 62.29, 85.85 and 49.14

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Solution

The fourth proportional to 62.29, 85.85 and 49.14 is: 67.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.29 : 85.85 = 49.14 : x
  2. Step 2: Convert to fraction form
    62.29/85.85 = 49.14/x
  3. Step 3: Cross multiply
    62.29x = 85.85 × 49.14
  4. Step 4: Simplify right side
    62.29x = 4,218.75
  5. Step 5: Solve for x
    x = 4,218.75/62.29
  6. Step 6: Final answer
    x = 67.72

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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.