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Finding the Fourth Proportional to 118.00, 176.84 and 66.57

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Solution

The fourth proportional to 118.00, 176.84 and 66.57 is: 99.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.00 : 176.84 = 66.57 : x
  2. Step 2: Convert to fraction form
    118.00/176.84 = 66.57/x
  3. Step 3: Cross multiply
    118.00x = 176.84 × 66.57
  4. Step 4: Simplify right side
    118.00x = 11,771.49
  5. Step 5: Solve for x
    x = 11,771.49/118.00
  6. Step 6: Final answer
    x = 99.76

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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.