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Finding the Fourth Proportional to 66.93, 100.54 and 63.08

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Solution

The fourth proportional to 66.93, 100.54 and 63.08 is: 94.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.93 : 100.54 = 63.08 : x
  2. Step 2: Convert to fraction form
    66.93/100.54 = 63.08/x
  3. Step 3: Cross multiply
    66.93x = 100.54 × 63.08
  4. Step 4: Simplify right side
    66.93x = 6,342.02
  5. Step 5: Solve for x
    x = 6,342.02/66.93
  6. Step 6: Final answer
    x = 94.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.