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Finding the Fourth Proportional to 498.06, 687.09 and 350.78

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Solution

The fourth proportional to 498.06, 687.09 and 350.78 is: 483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.06 : 687.09 = 350.78 : x
  2. Step 2: Convert to fraction form
    498.06/687.09 = 350.78/x
  3. Step 3: Cross multiply
    498.06x = 687.09 × 350.78
  4. Step 4: Simplify right side
    498.06x = 241,017.43
  5. Step 5: Solve for x
    x = 241,017.43/498.06
  6. Step 6: Final answer
    x = 483.91

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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.