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Finding the Fourth Proportional to 177.12, 266.71 and 154.56

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Solution

The fourth proportional to 177.12, 266.71 and 154.56 is: 232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.12 : 266.71 = 154.56 : x
  2. Step 2: Convert to fraction form
    177.12/266.71 = 154.56/x
  3. Step 3: Cross multiply
    177.12x = 266.71 × 154.56
  4. Step 4: Simplify right side
    177.12x = 41,222.70
  5. Step 5: Solve for x
    x = 41,222.70/177.12
  6. Step 6: Final answer
    x = 232.74

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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.