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Finding the Fourth Proportional to 347.48, 479.53 and 198.13

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Solution

The fourth proportional to 347.48, 479.53 and 198.13 is: 273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.48 : 479.53 = 198.13 : x
  2. Step 2: Convert to fraction form
    347.48/479.53 = 198.13/x
  3. Step 3: Cross multiply
    347.48x = 479.53 × 198.13
  4. Step 4: Simplify right side
    347.48x = 95,005.89
  5. Step 5: Solve for x
    x = 95,005.89/347.48
  6. Step 6: Final answer
    x = 273.42

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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.