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Finding the Fourth Proportional to 982.62, 1,473.46 and 571.88

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Solution

The fourth proportional to 982.62, 1,473.46 and 571.88 is: 857.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.62 : 1,473.46 = 571.88 : x
  2. Step 2: Convert to fraction form
    982.62/1,473.46 = 571.88/x
  3. Step 3: Cross multiply
    982.62x = 1,473.46 × 571.88
  4. Step 4: Simplify right side
    982.62x = 842,642.30
  5. Step 5: Solve for x
    x = 842,642.30/982.62
  6. Step 6: Final answer
    x = 857.55

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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.