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Finding the Fourth Proportional to 1,566.80, 2,350.20 and 1,293.20

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Solution

The fourth proportional to 1,566.80, 2,350.20 and 1,293.20 is: 1,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.80 : 2,350.20 = 1,293.20 : x
  2. Step 2: Convert to fraction form
    1,566.80/2,350.20 = 1,293.20/x
  3. Step 3: Cross multiply
    1,566.80x = 2,350.20 × 1,293.20
  4. Step 4: Simplify right side
    1,566.80x = 3,039,278.64
  5. Step 5: Solve for x
    x = 3,039,278.64/1,566.80
  6. Step 6: Final answer
    x = 1,939.80

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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.