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Finding the Fourth Proportional to 732.98, 1,099.20 and 618.23

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Solution

The fourth proportional to 732.98, 1,099.20 and 618.23 is: 927.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.98 : 1,099.20 = 618.23 : x
  2. Step 2: Convert to fraction form
    732.98/1,099.20 = 618.23/x
  3. Step 3: Cross multiply
    732.98x = 1,099.20 × 618.23
  4. Step 4: Simplify right side
    732.98x = 679,558.42
  5. Step 5: Solve for x
    x = 679,558.42/732.98
  6. Step 6: Final answer
    x = 927.12

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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.