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Finding the Fourth Proportional to 723.85, 998.25 and 475.07

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Solution

The fourth proportional to 723.85, 998.25 and 475.07 is: 655.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.85 : 998.25 = 475.07 : x
  2. Step 2: Convert to fraction form
    723.85/998.25 = 475.07/x
  3. Step 3: Cross multiply
    723.85x = 998.25 × 475.07
  4. Step 4: Simplify right side
    723.85x = 474,238.63
  5. Step 5: Solve for x
    x = 474,238.63/723.85
  6. Step 6: Final answer
    x = 655.17

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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.