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Finding the Fourth Proportional to 900.85, 1,350.60 and 575.59

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Solution

The fourth proportional to 900.85, 1,350.60 and 575.59 is: 862.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.85 : 1,350.60 = 575.59 : x
  2. Step 2: Convert to fraction form
    900.85/1,350.60 = 575.59/x
  3. Step 3: Cross multiply
    900.85x = 1,350.60 × 575.59
  4. Step 4: Simplify right side
    900.85x = 777,391.85
  5. Step 5: Solve for x
    x = 777,391.85/900.85
  6. Step 6: Final answer
    x = 862.95

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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.