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Finding the Fourth Proportional to 118.65, 179.27 and 117.53

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Solution

The fourth proportional to 118.65, 179.27 and 117.53 is: 177.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.65 : 179.27 = 117.53 : x
  2. Step 2: Convert to fraction form
    118.65/179.27 = 117.53/x
  3. Step 3: Cross multiply
    118.65x = 179.27 × 117.53
  4. Step 4: Simplify right side
    118.65x = 21,068.12
  5. Step 5: Solve for x
    x = 21,068.12/118.65
  6. Step 6: Final answer
    x = 177.57

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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.