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Finding the Fourth Proportional to 1,240.38, 1,867.76 and 896.06

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Solution

The fourth proportional to 1,240.38, 1,867.76 and 896.06 is: 1,349.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.38 : 1,867.76 = 896.06 : x
  2. Step 2: Convert to fraction form
    1,240.38/1,867.76 = 896.06/x
  3. Step 3: Cross multiply
    1,240.38x = 1,867.76 × 896.06
  4. Step 4: Simplify right side
    1,240.38x = 1,673,611.21
  5. Step 5: Solve for x
    x = 1,673,611.21/1,240.38
  6. Step 6: Final answer
    x = 1,349.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.