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Finding the Fourth Proportional to 982.94, 1,472.14 and 571.04

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Solution

The fourth proportional to 982.94, 1,472.14 and 571.04 is: 855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.94 : 1,472.14 = 571.04 : x
  2. Step 2: Convert to fraction form
    982.94/1,472.14 = 571.04/x
  3. Step 3: Cross multiply
    982.94x = 1,472.14 × 571.04
  4. Step 4: Simplify right side
    982.94x = 840,650.83
  5. Step 5: Solve for x
    x = 840,650.83/982.94
  6. Step 6: Final answer
    x = 855.24

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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.