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Finding the Fourth Proportional to 118.85, 176.85 and 117.63

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Solution

The fourth proportional to 118.85, 176.85 and 117.63 is: 175.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.85 : 176.85 = 117.63 : x
  2. Step 2: Convert to fraction form
    118.85/176.85 = 117.63/x
  3. Step 3: Cross multiply
    118.85x = 176.85 × 117.63
  4. Step 4: Simplify right side
    118.85x = 20,802.87
  5. Step 5: Solve for x
    x = 20,802.87/118.85
  6. Step 6: Final answer
    x = 175.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.