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Finding the Fourth Proportional to 1,434.11, 1,979.03 and 804.53

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Solution

The fourth proportional to 1,434.11, 1,979.03 and 804.53 is: 1,110.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.11 : 1,979.03 = 804.53 : x
  2. Step 2: Convert to fraction form
    1,434.11/1,979.03 = 804.53/x
  3. Step 3: Cross multiply
    1,434.11x = 1,979.03 × 804.53
  4. Step 4: Simplify right side
    1,434.11x = 1,592,195.96
  5. Step 5: Solve for x
    x = 1,592,195.96/1,434.11
  6. Step 6: Final answer
    x = 1,110.24

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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.