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Finding the Fourth Proportional to 718.61, 990.56 and 600.98

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Solution

The fourth proportional to 718.61, 990.56 and 600.98 is: 828.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.61 : 990.56 = 600.98 : x
  2. Step 2: Convert to fraction form
    718.61/990.56 = 600.98/x
  3. Step 3: Cross multiply
    718.61x = 990.56 × 600.98
  4. Step 4: Simplify right side
    718.61x = 595,310.73
  5. Step 5: Solve for x
    x = 595,310.73/718.61
  6. Step 6: Final answer
    x = 828.42

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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.