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Finding the Fourth Proportional to 1,008.80, 1,391.44 and 594.88

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Solution

The fourth proportional to 1,008.80, 1,391.44 and 594.88 is: 820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.80 : 1,391.44 = 594.88 : x
  2. Step 2: Convert to fraction form
    1,008.80/1,391.44 = 594.88/x
  3. Step 3: Cross multiply
    1,008.80x = 1,391.44 × 594.88
  4. Step 4: Simplify right side
    1,008.80x = 827,739.83
  5. Step 5: Solve for x
    x = 827,739.83/1,008.80
  6. Step 6: Final answer
    x = 820.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.