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Finding the Fourth Proportional to 177.57, 267.56 and 147.81

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Solution

The fourth proportional to 177.57, 267.56 and 147.81 is: 222.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.57 : 267.56 = 147.81 : x
  2. Step 2: Convert to fraction form
    177.57/267.56 = 147.81/x
  3. Step 3: Cross multiply
    177.57x = 267.56 × 147.81
  4. Step 4: Simplify right side
    177.57x = 39,547.30
  5. Step 5: Solve for x
    x = 39,547.30/177.57
  6. Step 6: Final answer
    x = 222.71

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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.