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Finding the Fourth Proportional to 1,473.29, 2,209.52 and 549.21

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Solution

The fourth proportional to 1,473.29, 2,209.52 and 549.21 is: 823.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,473.29 : 2,209.52 = 549.21 : x
  2. Step 2: Convert to fraction form
    1,473.29/2,209.52 = 549.21/x
  3. Step 3: Cross multiply
    1,473.29x = 2,209.52 × 549.21
  4. Step 4: Simplify right side
    1,473.29x = 1,213,487.73
  5. Step 5: Solve for x
    x = 1,213,487.73/1,473.29
  6. Step 6: Final answer
    x = 823.66

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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.