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Finding the Fourth Proportional to 347.25, 480.24 and 310.35

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Solution

The fourth proportional to 347.25, 480.24 and 310.35 is: 429.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.25 : 480.24 = 310.35 : x
  2. Step 2: Convert to fraction form
    347.25/480.24 = 310.35/x
  3. Step 3: Cross multiply
    347.25x = 480.24 × 310.35
  4. Step 4: Simplify right side
    347.25x = 149,042.48
  5. Step 5: Solve for x
    x = 149,042.48/347.25
  6. Step 6: Final answer
    x = 429.21

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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.