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Finding the Fourth Proportional to 723.01, 998.90 and 474.24

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Solution

The fourth proportional to 723.01, 998.90 and 474.24 is: 655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.01 : 998.90 = 474.24 : x
  2. Step 2: Convert to fraction form
    723.01/998.90 = 474.24/x
  3. Step 3: Cross multiply
    723.01x = 998.90 × 474.24
  4. Step 4: Simplify right side
    723.01x = 473,718.34
  5. Step 5: Solve for x
    x = 473,718.34/723.01
  6. Step 6: Final answer
    x = 655.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.