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Finding the Fourth Proportional to 1,244.65, 1,867.02 and 423.01

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Solution

The fourth proportional to 1,244.65, 1,867.02 and 423.01 is: 634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.65 : 1,867.02 = 423.01 : x
  2. Step 2: Convert to fraction form
    1,244.65/1,867.02 = 423.01/x
  3. Step 3: Cross multiply
    1,244.65x = 1,867.02 × 423.01
  4. Step 4: Simplify right side
    1,244.65x = 789,768.13
  5. Step 5: Solve for x
    x = 789,768.13/1,244.65
  6. Step 6: Final answer
    x = 634.53

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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.