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Finding the Fourth Proportional to 906.55, 1,250.94 and 574.85

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Solution

The fourth proportional to 906.55, 1,250.94 and 574.85 is: 793.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.55 : 1,250.94 = 574.85 : x
  2. Step 2: Convert to fraction form
    906.55/1,250.94 = 574.85/x
  3. Step 3: Cross multiply
    906.55x = 1,250.94 × 574.85
  4. Step 4: Simplify right side
    906.55x = 719,102.86
  5. Step 5: Solve for x
    x = 719,102.86/906.55
  6. Step 6: Final answer
    x = 793.23

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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.