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Finding the Fourth Proportional to 347.63, 479.34 and 223.29

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Solution

The fourth proportional to 347.63, 479.34 and 223.29 is: 307.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.63 : 479.34 = 223.29 : x
  2. Step 2: Convert to fraction form
    347.63/479.34 = 223.29/x
  3. Step 3: Cross multiply
    347.63x = 479.34 × 223.29
  4. Step 4: Simplify right side
    347.63x = 107,031.83
  5. Step 5: Solve for x
    x = 107,031.83/347.63
  6. Step 6: Final answer
    x = 307.89

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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.