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Finding the Fourth Proportional to 62.26, 85.55 and 49.30

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Solution

The fourth proportional to 62.26, 85.55 and 49.30 is: 67.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.26 : 85.55 = 49.30 : x
  2. Step 2: Convert to fraction form
    62.26/85.55 = 49.30/x
  3. Step 3: Cross multiply
    62.26x = 85.55 × 49.30
  4. Step 4: Simplify right side
    62.26x = 4,217.62
  5. Step 5: Solve for x
    x = 4,217.62/62.26
  6. Step 6: Final answer
    x = 67.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.