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Finding the Fourth Proportional to 814.11, 1,123.47 and 441.09

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Solution

The fourth proportional to 814.11, 1,123.47 and 441.09 is: 608.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.11 : 1,123.47 = 441.09 : x
  2. Step 2: Convert to fraction form
    814.11/1,123.47 = 441.09/x
  3. Step 3: Cross multiply
    814.11x = 1,123.47 × 441.09
  4. Step 4: Simplify right side
    814.11x = 495,551.38
  5. Step 5: Solve for x
    x = 495,551.38/814.11
  6. Step 6: Final answer
    x = 608.70

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Double scale
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1.5x scale

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.