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Finding the Fourth Proportional to 67.66, 92.95 and 63.56

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Solution

The fourth proportional to 67.66, 92.95 and 63.56 is: 87.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.66 : 92.95 = 63.56 : x
  2. Step 2: Convert to fraction form
    67.66/92.95 = 63.56/x
  3. Step 3: Cross multiply
    67.66x = 92.95 × 63.56
  4. Step 4: Simplify right side
    67.66x = 5,907.71
  5. Step 5: Solve for x
    x = 5,907.71/67.66
  6. Step 6: Final answer
    x = 87.31

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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.