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Finding the Fourth Proportional to 1,642.33, 2,464.22 and 669.13

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Solution

The fourth proportional to 1,642.33, 2,464.22 and 669.13 is: 1,003.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.33 : 2,464.22 = 669.13 : x
  2. Step 2: Convert to fraction form
    1,642.33/2,464.22 = 669.13/x
  3. Step 3: Cross multiply
    1,642.33x = 2,464.22 × 669.13
  4. Step 4: Simplify right side
    1,642.33x = 1,648,880.18
  5. Step 5: Solve for x
    x = 1,648,880.18/1,642.33
  6. Step 6: Final answer
    x = 1,003.99

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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.