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Finding the Fourth Proportional to 888.85, 1,227.06 and 609.60

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Solution

The fourth proportional to 888.85, 1,227.06 and 609.60 is: 841.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.85 : 1,227.06 = 609.60 : x
  2. Step 2: Convert to fraction form
    888.85/1,227.06 = 609.60/x
  3. Step 3: Cross multiply
    888.85x = 1,227.06 × 609.60
  4. Step 4: Simplify right side
    888.85x = 748,015.78
  5. Step 5: Solve for x
    x = 748,015.78/888.85
  6. Step 6: Final answer
    x = 841.55

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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.