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Finding the Fourth Proportional to 1,642.29, 2,463.42 and 668.16

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Solution

The fourth proportional to 1,642.29, 2,463.42 and 668.16 is: 1,002.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.29 : 2,463.42 = 668.16 : x
  2. Step 2: Convert to fraction form
    1,642.29/2,463.42 = 668.16/x
  3. Step 3: Cross multiply
    1,642.29x = 2,463.42 × 668.16
  4. Step 4: Simplify right side
    1,642.29x = 1,645,958.71
  5. Step 5: Solve for x
    x = 1,645,958.71/1,642.29
  6. Step 6: Final answer
    x = 1,002.23

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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.