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Finding the Fourth Proportional to 1,353.49, 1,867.81 and 732.49

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Solution

The fourth proportional to 1,353.49, 1,867.81 and 732.49 is: 1,010.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.49 : 1,867.81 = 732.49 : x
  2. Step 2: Convert to fraction form
    1,353.49/1,867.81 = 732.49/x
  3. Step 3: Cross multiply
    1,353.49x = 1,867.81 × 732.49
  4. Step 4: Simplify right side
    1,353.49x = 1,368,146.20
  5. Step 5: Solve for x
    x = 1,368,146.20/1,353.49
  6. Step 6: Final answer
    x = 1,010.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.