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Finding the Fourth Proportional to 347.72, 480.02 and 229.77

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Solution

The fourth proportional to 347.72, 480.02 and 229.77 is: 317.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.72 : 480.02 = 229.77 : x
  2. Step 2: Convert to fraction form
    347.72/480.02 = 229.77/x
  3. Step 3: Cross multiply
    347.72x = 480.02 × 229.77
  4. Step 4: Simplify right side
    347.72x = 110,293.05
  5. Step 5: Solve for x
    x = 110,293.05/347.72
  6. Step 6: Final answer
    x = 317.19

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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.