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Finding the Fourth Proportional to 558.72, 838.92 and 482.28

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Solution

The fourth proportional to 558.72, 838.92 and 482.28 is: 724.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.72 : 838.92 = 482.28 : x
  2. Step 2: Convert to fraction form
    558.72/838.92 = 482.28/x
  3. Step 3: Cross multiply
    558.72x = 838.92 × 482.28
  4. Step 4: Simplify right side
    558.72x = 404,594.34
  5. Step 5: Solve for x
    x = 404,594.34/558.72
  6. Step 6: Final answer
    x = 724.15

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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.