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Finding the Fourth Proportional to 67.43, 101.66 and 62.79

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Solution

The fourth proportional to 67.43, 101.66 and 62.79 is: 94.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.43 : 101.66 = 62.79 : x
  2. Step 2: Convert to fraction form
    67.43/101.66 = 62.79/x
  3. Step 3: Cross multiply
    67.43x = 101.66 × 62.79
  4. Step 4: Simplify right side
    67.43x = 6,383.23
  5. Step 5: Solve for x
    x = 6,383.23/67.43
  6. Step 6: Final answer
    x = 94.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.