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Finding the Fourth Proportional to 492.81, 739.20 and 232.72

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Solution

The fourth proportional to 492.81, 739.20 and 232.72 is: 349.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.81 : 739.20 = 232.72 : x
  2. Step 2: Convert to fraction form
    492.81/739.20 = 232.72/x
  3. Step 3: Cross multiply
    492.81x = 739.20 × 232.72
  4. Step 4: Simplify right side
    492.81x = 172,026.62
  5. Step 5: Solve for x
    x = 172,026.62/492.81
  6. Step 6: Final answer
    x = 349.07

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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.