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Finding the Fourth Proportional to 723.17, 998.12 and 474.05

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Solution

The fourth proportional to 723.17, 998.12 and 474.05 is: 654.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.17 : 998.12 = 474.05 : x
  2. Step 2: Convert to fraction form
    723.17/998.12 = 474.05/x
  3. Step 3: Cross multiply
    723.17x = 998.12 × 474.05
  4. Step 4: Simplify right side
    723.17x = 473,158.79
  5. Step 5: Solve for x
    x = 473,158.79/723.17
  6. Step 6: Final answer
    x = 654.28

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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.