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Finding the Fourth Proportional to 1,473.13, 2,209.11 and 548.38

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Solution

The fourth proportional to 1,473.13, 2,209.11 and 548.38 is: 822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,473.13 : 2,209.11 = 548.38 : x
  2. Step 2: Convert to fraction form
    1,473.13/2,209.11 = 548.38/x
  3. Step 3: Cross multiply
    1,473.13x = 2,209.11 × 548.38
  4. Step 4: Simplify right side
    1,473.13x = 1,211,431.74
  5. Step 5: Solve for x
    x = 1,211,431.74/1,473.13
  6. Step 6: Final answer
    x = 822.35

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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.