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Finding the Fourth Proportional to 62.53, 86.23 and 40.66

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Solution

The fourth proportional to 62.53, 86.23 and 40.66 is: 56.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.53 : 86.23 = 40.66 : x
  2. Step 2: Convert to fraction form
    62.53/86.23 = 40.66/x
  3. Step 3: Cross multiply
    62.53x = 86.23 × 40.66
  4. Step 4: Simplify right side
    62.53x = 3,506.11
  5. Step 5: Solve for x
    x = 3,506.11/62.53
  6. Step 6: Final answer
    x = 56.07

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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.