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Finding the Fourth Proportional to 893.32, 1,330.25 and 883.60

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Solution

The fourth proportional to 893.32, 1,330.25 and 883.60 is: 1,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.32 : 1,330.25 = 883.60 : x
  2. Step 2: Convert to fraction form
    893.32/1,330.25 = 883.60/x
  3. Step 3: Cross multiply
    893.32x = 1,330.25 × 883.60
  4. Step 4: Simplify right side
    893.32x = 1,175,408.90
  5. Step 5: Solve for x
    x = 1,175,408.90/893.32
  6. Step 6: Final answer
    x = 1,315.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.