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Finding the Fourth Proportional to 886.46, 1,327.88 and 556.31

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Solution

The fourth proportional to 886.46, 1,327.88 and 556.31 is: 833.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.46 : 1,327.88 = 556.31 : x
  2. Step 2: Convert to fraction form
    886.46/1,327.88 = 556.31/x
  3. Step 3: Cross multiply
    886.46x = 1,327.88 × 556.31
  4. Step 4: Simplify right side
    886.46x = 738,703.50
  5. Step 5: Solve for x
    x = 738,703.50/886.46
  6. Step 6: Final answer
    x = 833.32

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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.