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Finding the Fourth Proportional to 888.16, 1,331.96 and 581.64

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Solution

The fourth proportional to 888.16, 1,331.96 and 581.64 is: 872.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.16 : 1,331.96 = 581.64 : x
  2. Step 2: Convert to fraction form
    888.16/1,331.96 = 581.64/x
  3. Step 3: Cross multiply
    888.16x = 1,331.96 × 581.64
  4. Step 4: Simplify right side
    888.16x = 774,721.21
  5. Step 5: Solve for x
    x = 774,721.21/888.16
  6. Step 6: Final answer
    x = 872.28

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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.