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Finding the Fourth Proportional to 1,802, 2,701.92 and 631.36

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Solution

The fourth proportional to 1,802, 2,701.92 and 631.36 is: 946.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802 : 2,701.92 = 631.36 : x
  2. Step 2: Convert to fraction form
    1,802/2,701.92 = 631.36/x
  3. Step 3: Cross multiply
    1,802x = 2,701.92 × 631.36
  4. Step 4: Simplify right side
    1,802x = 1,705,884.21
  5. Step 5: Solve for x
    x = 1,705,884.21/1,802
  6. Step 6: Final answer
    x = 946.66

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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.