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Finding the Fourth Proportional to 888.34, 1,331.40 and 563.80

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Solution

The fourth proportional to 888.34, 1,331.40 and 563.80 is: 844.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.34 : 1,331.40 = 563.80 : x
  2. Step 2: Convert to fraction form
    888.34/1,331.40 = 563.80/x
  3. Step 3: Cross multiply
    888.34x = 1,331.40 × 563.80
  4. Step 4: Simplify right side
    888.34x = 750,636.66
  5. Step 5: Solve for x
    x = 750,636.66/888.34
  6. Step 6: Final answer
    x = 844.99

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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.