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Finding the Fourth Proportional to 1,228.82, 1,843.91 and 498.91

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Solution

The fourth proportional to 1,228.82, 1,843.91 and 498.91 is: 748.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.82 : 1,843.91 = 498.91 : x
  2. Step 2: Convert to fraction form
    1,228.82/1,843.91 = 498.91/x
  3. Step 3: Cross multiply
    1,228.82x = 1,843.91 × 498.91
  4. Step 4: Simplify right side
    1,228.82x = 919,946.17
  5. Step 5: Solve for x
    x = 919,946.17/1,228.82
  6. Step 6: Final answer
    x = 748.64

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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.