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Finding the Fourth Proportional to 1,080.66, 1,621.40 and 532.29

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Solution

The fourth proportional to 1,080.66, 1,621.40 and 532.29 is: 798.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.66 : 1,621.40 = 532.29 : x
  2. Step 2: Convert to fraction form
    1,080.66/1,621.40 = 532.29/x
  3. Step 3: Cross multiply
    1,080.66x = 1,621.40 × 532.29
  4. Step 4: Simplify right side
    1,080.66x = 863,052.34
  5. Step 5: Solve for x
    x = 863,052.34/1,080.66
  6. Step 6: Final answer
    x = 798.63

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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.