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Finding the Fourth Proportional to 314.56, 472.02 and 177.76

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Solution

The fourth proportional to 314.56, 472.02 and 177.76 is: 266.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.56 : 472.02 = 177.76 : x
  2. Step 2: Convert to fraction form
    314.56/472.02 = 177.76/x
  3. Step 3: Cross multiply
    314.56x = 472.02 × 177.76
  4. Step 4: Simplify right side
    314.56x = 83,906.28
  5. Step 5: Solve for x
    x = 83,906.28/314.56
  6. Step 6: Final answer
    x = 266.74

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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.