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Finding the Fourth Proportional to 773.38, 1,160.25 and 260.38

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Solution

The fourth proportional to 773.38, 1,160.25 and 260.38 is: 390.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.38 : 1,160.25 = 260.38 : x
  2. Step 2: Convert to fraction form
    773.38/1,160.25 = 260.38/x
  3. Step 3: Cross multiply
    773.38x = 1,160.25 × 260.38
  4. Step 4: Simplify right side
    773.38x = 302,098.79
  5. Step 5: Solve for x
    x = 302,098.79/773.38
  6. Step 6: Final answer
    x = 390.62

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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.