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Finding the Fourth Proportional to 492.54, 737.67 and 387.57

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Solution

The fourth proportional to 492.54, 737.67 and 387.57 is: 580.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.54 : 737.67 = 387.57 : x
  2. Step 2: Convert to fraction form
    492.54/737.67 = 387.57/x
  3. Step 3: Cross multiply
    492.54x = 737.67 × 387.57
  4. Step 4: Simplify right side
    492.54x = 285,898.76
  5. Step 5: Solve for x
    x = 285,898.76/492.54
  6. Step 6: Final answer
    x = 580.46

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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.