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Finding the Fourth Proportional to 339.65, 469.11 and 269.93

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Solution

The fourth proportional to 339.65, 469.11 and 269.93 is: 372.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.65 : 469.11 = 269.93 : x
  2. Step 2: Convert to fraction form
    339.65/469.11 = 269.93/x
  3. Step 3: Cross multiply
    339.65x = 469.11 × 269.93
  4. Step 4: Simplify right side
    339.65x = 126,626.86
  5. Step 5: Solve for x
    x = 126,626.86/339.65
  6. Step 6: Final answer
    x = 372.82

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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.