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Finding the Fourth Proportional to 893.16, 1,231.74 and 754.68

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Solution

The fourth proportional to 893.16, 1,231.74 and 754.68 is: 1,040.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.16 : 1,231.74 = 754.68 : x
  2. Step 2: Convert to fraction form
    893.16/1,231.74 = 754.68/x
  3. Step 3: Cross multiply
    893.16x = 1,231.74 × 754.68
  4. Step 4: Simplify right side
    893.16x = 929,569.54
  5. Step 5: Solve for x
    x = 929,569.54/893.16
  6. Step 6: Final answer
    x = 1,040.76

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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.