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Finding the Fourth Proportional to 944.26, 1,302.78 and 551.20

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Solution

The fourth proportional to 944.26, 1,302.78 and 551.20 is: 760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.26 : 1,302.78 = 551.20 : x
  2. Step 2: Convert to fraction form
    944.26/1,302.78 = 551.20/x
  3. Step 3: Cross multiply
    944.26x = 1,302.78 × 551.20
  4. Step 4: Simplify right side
    944.26x = 718,092.34
  5. Step 5: Solve for x
    x = 718,092.34/944.26
  6. Step 6: Final answer
    x = 760.48

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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.