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Finding the Fourth Proportional to 1,547.86, 2,321.17 and 574.04

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Solution

The fourth proportional to 1,547.86, 2,321.17 and 574.04 is: 860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.86 : 2,321.17 = 574.04 : x
  2. Step 2: Convert to fraction form
    1,547.86/2,321.17 = 574.04/x
  3. Step 3: Cross multiply
    1,547.86x = 2,321.17 × 574.04
  4. Step 4: Simplify right side
    1,547.86x = 1,332,441.56
  5. Step 5: Solve for x
    x = 1,332,441.56/1,547.86
  6. Step 6: Final answer
    x = 860.83

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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.