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Finding the Fourth Proportional to 1,644.17, 2,465.24 and 669.06

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Solution

The fourth proportional to 1,644.17, 2,465.24 and 669.06 is: 1,003.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.17 : 2,465.24 = 669.06 : x
  2. Step 2: Convert to fraction form
    1,644.17/2,465.24 = 669.06/x
  3. Step 3: Cross multiply
    1,644.17x = 2,465.24 × 669.06
  4. Step 4: Simplify right side
    1,644.17x = 1,649,390.13
  5. Step 5: Solve for x
    x = 1,649,390.13/1,644.17
  6. Step 6: Final answer
    x = 1,003.18

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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.