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Finding the Fourth Proportional to 718.75, 990.66 and 594.01

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Solution

The fourth proportional to 718.75, 990.66 and 594.01 is: 818.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.75 : 990.66 = 594.01 : x
  2. Step 2: Convert to fraction form
    718.75/990.66 = 594.01/x
  3. Step 3: Cross multiply
    718.75x = 990.66 × 594.01
  4. Step 4: Simplify right side
    718.75x = 588,461.95
  5. Step 5: Solve for x
    x = 588,461.95/718.75
  6. Step 6: Final answer
    x = 818.73

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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.