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Finding the Fourth Proportional to 498.88, 752.92 and 485.92

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Solution

The fourth proportional to 498.88, 752.92 and 485.92 is: 733.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.88 : 752.92 = 485.92 : x
  2. Step 2: Convert to fraction form
    498.88/752.92 = 485.92/x
  3. Step 3: Cross multiply
    498.88x = 752.92 × 485.92
  4. Step 4: Simplify right side
    498.88x = 365,858.89
  5. Step 5: Solve for x
    x = 365,858.89/498.88
  6. Step 6: Final answer
    x = 733.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.