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Finding the Fourth Proportional to 875.75, 1,314.30 and 773.24

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Solution

The fourth proportional to 875.75, 1,314.30 and 773.24 is: 1,160.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.75 : 1,314.30 = 773.24 : x
  2. Step 2: Convert to fraction form
    875.75/1,314.30 = 773.24/x
  3. Step 3: Cross multiply
    875.75x = 1,314.30 × 773.24
  4. Step 4: Simplify right side
    875.75x = 1,016,262.76
  5. Step 5: Solve for x
    x = 1,016,262.76/875.75
  6. Step 6: Final answer
    x = 1,160.46

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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.