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Finding the Fourth Proportional to 1,644.66, 2,269.53 and 946.26

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Solution

The fourth proportional to 1,644.66, 2,269.53 and 946.26 is: 1,305.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.66 : 2,269.53 = 946.26 : x
  2. Step 2: Convert to fraction form
    1,644.66/2,269.53 = 946.26/x
  3. Step 3: Cross multiply
    1,644.66x = 2,269.53 × 946.26
  4. Step 4: Simplify right side
    1,644.66x = 2,147,565.46
  5. Step 5: Solve for x
    x = 2,147,565.46/1,644.66
  6. Step 6: Final answer
    x = 1,305.78

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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.