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Finding the Fourth Proportional to 1,033.66, 1,425.82 and 613.73

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Solution

The fourth proportional to 1,033.66, 1,425.82 and 613.73 is: 846.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.66 : 1,425.82 = 613.73 : x
  2. Step 2: Convert to fraction form
    1,033.66/1,425.82 = 613.73/x
  3. Step 3: Cross multiply
    1,033.66x = 1,425.82 × 613.73
  4. Step 4: Simplify right side
    1,033.66x = 875,068.51
  5. Step 5: Solve for x
    x = 875,068.51/1,033.66
  6. Step 6: Final answer
    x = 846.57

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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.