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Finding the Fourth Proportional to 492.78, 737.88 and 371.28

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Solution

The fourth proportional to 492.78, 737.88 and 371.28 is: 555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.78 : 737.88 = 371.28 : x
  2. Step 2: Convert to fraction form
    492.78/737.88 = 371.28/x
  3. Step 3: Cross multiply
    492.78x = 737.88 × 371.28
  4. Step 4: Simplify right side
    492.78x = 273,957.32
  5. Step 5: Solve for x
    x = 273,957.32/492.78
  6. Step 6: Final answer
    x = 555.95

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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.