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Finding the Fourth Proportional to 723.80, 997.71 and 591.57

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Solution

The fourth proportional to 723.80, 997.71 and 591.57 is: 815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.80 : 997.71 = 591.57 : x
  2. Step 2: Convert to fraction form
    723.80/997.71 = 591.57/x
  3. Step 3: Cross multiply
    723.80x = 997.71 × 591.57
  4. Step 4: Simplify right side
    723.80x = 590,215.30
  5. Step 5: Solve for x
    x = 590,215.30/723.80
  6. Step 6: Final answer
    x = 815.45

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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.