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Finding the Fourth Proportional to 1,032.81, 1,425.21 and 613.14

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Solution

The fourth proportional to 1,032.81, 1,425.21 and 613.14 is: 846.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.81 : 1,425.21 = 613.14 : x
  2. Step 2: Convert to fraction form
    1,032.81/1,425.21 = 613.14/x
  3. Step 3: Cross multiply
    1,032.81x = 1,425.21 × 613.14
  4. Step 4: Simplify right side
    1,032.81x = 873,853.26
  5. Step 5: Solve for x
    x = 873,853.26/1,032.81
  6. Step 6: Final answer
    x = 846.09

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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.