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Finding the Fourth Proportional to 498.75, 687.20 and 350.97

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Solution

The fourth proportional to 498.75, 687.20 and 350.97 is: 483.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.75 : 687.20 = 350.97 : x
  2. Step 2: Convert to fraction form
    498.75/687.20 = 350.97/x
  3. Step 3: Cross multiply
    498.75x = 687.20 × 350.97
  4. Step 4: Simplify right side
    498.75x = 241,184.83
  5. Step 5: Solve for x
    x = 241,184.83/498.75
  6. Step 6: Final answer
    x = 483.58

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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.