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Finding the Fourth Proportional to 1,227.87, 1,842.21 and 498.06

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Solution

The fourth proportional to 1,227.87, 1,842.21 and 498.06 is: 747.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.87 : 1,842.21 = 498.06 : x
  2. Step 2: Convert to fraction form
    1,227.87/1,842.21 = 498.06/x
  3. Step 3: Cross multiply
    1,227.87x = 1,842.21 × 498.06
  4. Step 4: Simplify right side
    1,227.87x = 917,531.11
  5. Step 5: Solve for x
    x = 917,531.11/1,227.87
  6. Step 6: Final answer
    x = 747.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.