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Finding the Fourth Proportional to 888.56, 1,332.88 and 613.98

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Solution

The fourth proportional to 888.56, 1,332.88 and 613.98 is: 921.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.56 : 1,332.88 = 613.98 : x
  2. Step 2: Convert to fraction form
    888.56/1,332.88 = 613.98/x
  3. Step 3: Cross multiply
    888.56x = 1,332.88 × 613.98
  4. Step 4: Simplify right side
    888.56x = 818,361.66
  5. Step 5: Solve for x
    x = 818,361.66/888.56
  6. Step 6: Final answer
    x = 921.00

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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.