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Finding the Fourth Proportional to 1,228.84, 1,842.85 and 498.22

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Solution

The fourth proportional to 1,228.84, 1,842.85 and 498.22 is: 747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.84 : 1,842.85 = 498.22 : x
  2. Step 2: Convert to fraction form
    1,228.84/1,842.85 = 498.22/x
  3. Step 3: Cross multiply
    1,228.84x = 1,842.85 × 498.22
  4. Step 4: Simplify right side
    1,228.84x = 918,144.73
  5. Step 5: Solve for x
    x = 918,144.73/1,228.84
  6. Step 6: Final answer
    x = 747.16

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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.