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Finding the Fourth Proportional to 732.84, 1,099.46 and 386.09

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Solution

The fourth proportional to 732.84, 1,099.46 and 386.09 is: 579.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.84 : 1,099.46 = 386.09 : x
  2. Step 2: Convert to fraction form
    732.84/1,099.46 = 386.09/x
  3. Step 3: Cross multiply
    732.84x = 1,099.46 × 386.09
  4. Step 4: Simplify right side
    732.84x = 424,490.10
  5. Step 5: Solve for x
    x = 424,490.10/732.84
  6. Step 6: Final answer
    x = 579.24

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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.