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Finding the Fourth Proportional to 63.94, 96.33 and 55.90

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Solution

The fourth proportional to 63.94, 96.33 and 55.90 is: 84.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.94 : 96.33 = 55.90 : x
  2. Step 2: Convert to fraction form
    63.94/96.33 = 55.90/x
  3. Step 3: Cross multiply
    63.94x = 96.33 × 55.90
  4. Step 4: Simplify right side
    63.94x = 5,384.57
  5. Step 5: Solve for x
    x = 5,384.57/63.94
  6. Step 6: Final answer
    x = 84.21

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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.