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Finding the Fourth Proportional to 67.30, 100.46 and 62.74

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Solution

The fourth proportional to 67.30, 100.46 and 62.74 is: 93.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.30 : 100.46 = 62.74 : x
  2. Step 2: Convert to fraction form
    67.30/100.46 = 62.74/x
  3. Step 3: Cross multiply
    67.30x = 100.46 × 62.74
  4. Step 4: Simplify right side
    67.30x = 6,302.86
  5. Step 5: Solve for x
    x = 6,302.86/67.30
  6. Step 6: Final answer
    x = 93.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.