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Finding the Fourth Proportional to 1,098.20, 1,515.52 and 600.83

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Solution

The fourth proportional to 1,098.20, 1,515.52 and 600.83 is: 829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.20 : 1,515.52 = 600.83 : x
  2. Step 2: Convert to fraction form
    1,098.20/1,515.52 = 600.83/x
  3. Step 3: Cross multiply
    1,098.20x = 1,515.52 × 600.83
  4. Step 4: Simplify right side
    1,098.20x = 910,569.88
  5. Step 5: Solve for x
    x = 910,569.88/1,098.20
  6. Step 6: Final answer
    x = 829.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.