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Finding the Fourth Proportional to 407.23, 561.97 and 232.56

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Solution

The fourth proportional to 407.23, 561.97 and 232.56 is: 320.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.23 : 561.97 = 232.56 : x
  2. Step 2: Convert to fraction form
    407.23/561.97 = 232.56/x
  3. Step 3: Cross multiply
    407.23x = 561.97 × 232.56
  4. Step 4: Simplify right side
    407.23x = 130,691.74
  5. Step 5: Solve for x
    x = 130,691.74/407.23
  6. Step 6: Final answer
    x = 320.93

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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.