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Finding the Fourth Proportional to 351.29, 488.13 and 347.49

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Solution

The fourth proportional to 351.29, 488.13 and 347.49 is: 482.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.29 : 488.13 = 347.49 : x
  2. Step 2: Convert to fraction form
    351.29/488.13 = 347.49/x
  3. Step 3: Cross multiply
    351.29x = 488.13 × 347.49
  4. Step 4: Simplify right side
    351.29x = 169,618.99
  5. Step 5: Solve for x
    x = 169,618.99/351.29
  6. Step 6: Final answer
    x = 482.85

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.