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Finding the Fourth Proportional to 67.06, 92.59 and 51.49

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Solution

The fourth proportional to 67.06, 92.59 and 51.49 is: 71.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.06 : 92.59 = 51.49 : x
  2. Step 2: Convert to fraction form
    67.06/92.59 = 51.49/x
  3. Step 3: Cross multiply
    67.06x = 92.59 × 51.49
  4. Step 4: Simplify right side
    67.06x = 4,767.27
  5. Step 5: Solve for x
    x = 4,767.27/67.06
  6. Step 6: Final answer
    x = 71.09

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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.