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Finding the Fourth Proportional to 1,079.95, 1,620.27 and 532.18

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Solution

The fourth proportional to 1,079.95, 1,620.27 and 532.18 is: 798.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.95 : 1,620.27 = 532.18 : x
  2. Step 2: Convert to fraction form
    1,079.95/1,620.27 = 532.18/x
  3. Step 3: Cross multiply
    1,079.95x = 1,620.27 × 532.18
  4. Step 4: Simplify right side
    1,079.95x = 862,275.29
  5. Step 5: Solve for x
    x = 862,275.29/1,079.95
  6. Step 6: Final answer
    x = 798.44

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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.