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Finding the Fourth Proportional to 153.22, 229.58 and 118.60

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Solution

The fourth proportional to 153.22, 229.58 and 118.60 is: 177.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.22 : 229.58 = 118.60 : x
  2. Step 2: Convert to fraction form
    153.22/229.58 = 118.60/x
  3. Step 3: Cross multiply
    153.22x = 229.58 × 118.60
  4. Step 4: Simplify right side
    153.22x = 27,227.91
  5. Step 5: Solve for x
    x = 27,227.91/153.22
  6. Step 6: Final answer
    x = 177.71

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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.