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Finding the Fourth Proportional to 1,566.47, 2,350.25 and 980.80

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Solution

The fourth proportional to 1,566.47, 2,350.25 and 980.80 is: 1,471.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.47 : 2,350.25 = 980.80 : x
  2. Step 2: Convert to fraction form
    1,566.47/2,350.25 = 980.80/x
  3. Step 3: Cross multiply
    1,566.47x = 2,350.25 × 980.80
  4. Step 4: Simplify right side
    1,566.47x = 2,305,125.20
  5. Step 5: Solve for x
    x = 2,305,125.20/1,566.47
  6. Step 6: Final answer
    x = 1,471.54

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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.