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Finding the Fourth Proportional to 616.65, 923.21 and 341.73

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Solution

The fourth proportional to 616.65, 923.21 and 341.73 is: 511.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.65 : 923.21 = 341.73 : x
  2. Step 2: Convert to fraction form
    616.65/923.21 = 341.73/x
  3. Step 3: Cross multiply
    616.65x = 923.21 × 341.73
  4. Step 4: Simplify right side
    616.65x = 315,486.84
  5. Step 5: Solve for x
    x = 315,486.84/616.65
  6. Step 6: Final answer
    x = 511.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.