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Finding the Fourth Proportional to 875.03, 1,306.14 and 771.24

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Solution

The fourth proportional to 875.03, 1,306.14 and 771.24 is: 1,151.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.03 : 1,306.14 = 771.24 : x
  2. Step 2: Convert to fraction form
    875.03/1,306.14 = 771.24/x
  3. Step 3: Cross multiply
    875.03x = 1,306.14 × 771.24
  4. Step 4: Simplify right side
    875.03x = 1,007,340.88
  5. Step 5: Solve for x
    x = 1,007,340.88/875.03
  6. Step 6: Final answer
    x = 1,151.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.