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Finding the Fourth Proportional to 866.56, 1,195.19 and 551.88

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Solution

The fourth proportional to 866.56, 1,195.19 and 551.88 is: 761.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.56 : 1,195.19 = 551.88 : x
  2. Step 2: Convert to fraction form
    866.56/1,195.19 = 551.88/x
  3. Step 3: Cross multiply
    866.56x = 1,195.19 × 551.88
  4. Step 4: Simplify right side
    866.56x = 659,601.46
  5. Step 5: Solve for x
    x = 659,601.46/866.56
  6. Step 6: Final answer
    x = 761.17

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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.