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Finding the Fourth Proportional to 62.57, 85.15 and 62.27

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Solution

The fourth proportional to 62.57, 85.15 and 62.27 is: 84.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.57 : 85.15 = 62.27 : x
  2. Step 2: Convert to fraction form
    62.57/85.15 = 62.27/x
  3. Step 3: Cross multiply
    62.57x = 85.15 × 62.27
  4. Step 4: Simplify right side
    62.57x = 5,302.26
  5. Step 5: Solve for x
    x = 5,302.26/62.57
  6. Step 6: Final answer
    x = 84.74

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.