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Finding the Fourth Proportional to 67.52, 92.61 and 64.44

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Solution

The fourth proportional to 67.52, 92.61 and 64.44 is: 88.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.52 : 92.61 = 64.44 : x
  2. Step 2: Convert to fraction form
    67.52/92.61 = 64.44/x
  3. Step 3: Cross multiply
    67.52x = 92.61 × 64.44
  4. Step 4: Simplify right side
    67.52x = 5,967.79
  5. Step 5: Solve for x
    x = 5,967.79/67.52
  6. Step 6: Final answer
    x = 88.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.