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Finding the Fourth Proportional to 67.01, 92.51 and 50.72

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Solution

The fourth proportional to 67.01, 92.51 and 50.72 is: 70.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.01 : 92.51 = 50.72 : x
  2. Step 2: Convert to fraction form
    67.01/92.51 = 50.72/x
  3. Step 3: Cross multiply
    67.01x = 92.51 × 50.72
  4. Step 4: Simplify right side
    67.01x = 4,691.39
  5. Step 5: Solve for x
    x = 4,691.39/67.01
  6. Step 6: Final answer
    x = 70.02

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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.