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Finding the Fourth Proportional to 626.97, 865.19 and 347.19

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Solution

The fourth proportional to 626.97, 865.19 and 347.19 is: 479.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.97 : 865.19 = 347.19 : x
  2. Step 2: Convert to fraction form
    626.97/865.19 = 347.19/x
  3. Step 3: Cross multiply
    626.97x = 865.19 × 347.19
  4. Step 4: Simplify right side
    626.97x = 300,385.32
  5. Step 5: Solve for x
    x = 300,385.32/626.97
  6. Step 6: Final answer
    x = 479.11

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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.