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Finding the Fourth Proportional to 371.81, 557.72 and 152.56

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Solution

The fourth proportional to 371.81, 557.72 and 152.56 is: 228.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.81 : 557.72 = 152.56 : x
  2. Step 2: Convert to fraction form
    371.81/557.72 = 152.56/x
  3. Step 3: Cross multiply
    371.81x = 557.72 × 152.56
  4. Step 4: Simplify right side
    371.81x = 85,083.61
  5. Step 5: Solve for x
    x = 85,083.61/371.81
  6. Step 6: Final answer
    x = 228.83

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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.