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Finding the Fourth Proportional to 626.88, 865.08 and 347.10

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Solution

The fourth proportional to 626.88, 865.08 and 347.10 is: 478.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.88 : 865.08 = 347.10 : x
  2. Step 2: Convert to fraction form
    626.88/865.08 = 347.10/x
  3. Step 3: Cross multiply
    626.88x = 865.08 × 347.10
  4. Step 4: Simplify right side
    626.88x = 300,269.27
  5. Step 5: Solve for x
    x = 300,269.27/626.88
  6. Step 6: Final answer
    x = 478.99

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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.