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Finding the Fourth Proportional to 1,229.65, 1,844.70 and 499.30

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Solution

The fourth proportional to 1,229.65, 1,844.70 and 499.30 is: 749.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.65 : 1,844.70 = 499.30 : x
  2. Step 2: Convert to fraction form
    1,229.65/1,844.70 = 499.30/x
  3. Step 3: Cross multiply
    1,229.65x = 1,844.70 × 499.30
  4. Step 4: Simplify right side
    1,229.65x = 921,058.71
  5. Step 5: Solve for x
    x = 921,058.71/1,229.65
  6. Step 6: Final answer
    x = 749.04

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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.