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Finding the Fourth Proportional to 347.57, 479.42 and 223.39

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Solution

The fourth proportional to 347.57, 479.42 and 223.39 is: 308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.57 : 479.42 = 223.39 : x
  2. Step 2: Convert to fraction form
    347.57/479.42 = 223.39/x
  3. Step 3: Cross multiply
    347.57x = 479.42 × 223.39
  4. Step 4: Simplify right side
    347.57x = 107,095.32
  5. Step 5: Solve for x
    x = 107,095.32/347.57
  6. Step 6: Final answer
    x = 308.13

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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.