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Finding the Fourth Proportional to 1,034.75, 1,423.71 and 894.41

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Solution

The fourth proportional to 1,034.75, 1,423.71 and 894.41 is: 1,230.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.75 : 1,423.71 = 894.41 : x
  2. Step 2: Convert to fraction form
    1,034.75/1,423.71 = 894.41/x
  3. Step 3: Cross multiply
    1,034.75x = 1,423.71 × 894.41
  4. Step 4: Simplify right side
    1,034.75x = 1,273,373.34
  5. Step 5: Solve for x
    x = 1,273,373.34/1,034.75
  6. Step 6: Final answer
    x = 1,230.62

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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.