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Finding the Fourth Proportional to 773.49, 1,160.31 and 225.53

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Solution

The fourth proportional to 773.49, 1,160.31 and 225.53 is: 338.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.49 : 1,160.31 = 225.53 : x
  2. Step 2: Convert to fraction form
    773.49/1,160.31 = 225.53/x
  3. Step 3: Cross multiply
    773.49x = 1,160.31 × 225.53
  4. Step 4: Simplify right side
    773.49x = 261,678.91
  5. Step 5: Solve for x
    x = 261,678.91/773.49
  6. Step 6: Final answer
    x = 338.31

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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.