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Finding the Fourth Proportional to 347.64, 479.68 and 223.32

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Solution

The fourth proportional to 347.64, 479.68 and 223.32 is: 308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.64 : 479.68 = 223.32 : x
  2. Step 2: Convert to fraction form
    347.64/479.68 = 223.32/x
  3. Step 3: Cross multiply
    347.64x = 479.68 × 223.32
  4. Step 4: Simplify right side
    347.64x = 107,122.14
  5. Step 5: Solve for x
    x = 107,122.14/347.64
  6. Step 6: Final answer
    x = 308.14

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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.