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Finding the Fourth Proportional to 723.17, 998.11 and 565.49

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Solution

The fourth proportional to 723.17, 998.11 and 565.49 is: 780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.17 : 998.11 = 565.49 : x
  2. Step 2: Convert to fraction form
    723.17/998.11 = 565.49/x
  3. Step 3: Cross multiply
    723.17x = 998.11 × 565.49
  4. Step 4: Simplify right side
    723.17x = 564,416.23
  5. Step 5: Solve for x
    x = 564,416.23/723.17
  6. Step 6: Final answer
    x = 780.48

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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.