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Finding the Fourth Proportional to 773.13, 1,159.57 and 225.19

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Solution

The fourth proportional to 773.13, 1,159.57 and 225.19 is: 337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.13 : 1,159.57 = 225.19 : x
  2. Step 2: Convert to fraction form
    773.13/1,159.57 = 225.19/x
  3. Step 3: Cross multiply
    773.13x = 1,159.57 × 225.19
  4. Step 4: Simplify right side
    773.13x = 261,123.57
  5. Step 5: Solve for x
    x = 261,123.57/773.13
  6. Step 6: Final answer
    x = 337.75

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1.5x scale

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.