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Finding the Fourth Proportional to 1,479.44, 2,218.08 and 554.42

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Solution

The fourth proportional to 1,479.44, 2,218.08 and 554.42 is: 831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.44 : 2,218.08 = 554.42 : x
  2. Step 2: Convert to fraction form
    1,479.44/2,218.08 = 554.42/x
  3. Step 3: Cross multiply
    1,479.44x = 2,218.08 × 554.42
  4. Step 4: Simplify right side
    1,479.44x = 1,229,747.91
  5. Step 5: Solve for x
    x = 1,229,747.91/1,479.44
  6. Step 6: Final answer
    x = 831.23

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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.