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Finding the Fourth Proportional to 894.12, 1,338.45 and 719.16

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Solution

The fourth proportional to 894.12, 1,338.45 and 719.16 is: 1,076.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.12 : 1,338.45 = 719.16 : x
  2. Step 2: Convert to fraction form
    894.12/1,338.45 = 719.16/x
  3. Step 3: Cross multiply
    894.12x = 1,338.45 × 719.16
  4. Step 4: Simplify right side
    894.12x = 962,559.70
  5. Step 5: Solve for x
    x = 962,559.70/894.12
  6. Step 6: Final answer
    x = 1,076.54

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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.