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Finding the Fourth Proportional to 944.79, 1,304.08 and 551.90

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Solution

The fourth proportional to 944.79, 1,304.08 and 551.90 is: 761.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.79 : 1,304.08 = 551.90 : x
  2. Step 2: Convert to fraction form
    944.79/1,304.08 = 551.90/x
  3. Step 3: Cross multiply
    944.79x = 1,304.08 × 551.90
  4. Step 4: Simplify right side
    944.79x = 719,726.74
  5. Step 5: Solve for x
    x = 719,726.74/944.79
  6. Step 6: Final answer
    x = 761.79

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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.