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Finding the Fourth Proportional to 944.87, 1,302.78 and 613.17

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Solution

The fourth proportional to 944.87, 1,302.78 and 613.17 is: 845.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.87 : 1,302.78 = 613.17 : x
  2. Step 2: Convert to fraction form
    944.87/1,302.78 = 613.17/x
  3. Step 3: Cross multiply
    944.87x = 1,302.78 × 613.17
  4. Step 4: Simplify right side
    944.87x = 798,827.91
  5. Step 5: Solve for x
    x = 798,827.91/944.87
  6. Step 6: Final answer
    x = 845.44

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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.