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Finding the Fourth Proportional to 556.47, 834.71 and 191.43

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Solution

The fourth proportional to 556.47, 834.71 and 191.43 is: 287.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.47 : 834.71 = 191.43 : x
  2. Step 2: Convert to fraction form
    556.47/834.71 = 191.43/x
  3. Step 3: Cross multiply
    556.47x = 834.71 × 191.43
  4. Step 4: Simplify right side
    556.47x = 159,787.58
  5. Step 5: Solve for x
    x = 159,787.58/556.47
  6. Step 6: Final answer
    x = 287.15

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Similar ratio
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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.