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Finding the Fourth Proportional to 296.56, 441.92 and 280

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Solution

The fourth proportional to 296.56, 441.92 and 280 is: 417.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.56 : 441.92 = 280 : x
  2. Step 2: Convert to fraction form
    296.56/441.92 = 280/x
  3. Step 3: Cross multiply
    296.56x = 441.92 × 280
  4. Step 4: Simplify right side
    296.56x = 123,737.60
  5. Step 5: Solve for x
    x = 123,737.60/296.56
  6. Step 6: Final answer
    x = 417.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.