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Finding the Fourth Proportional to 994.65, 1,373.25 and 622.18

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Solution

The fourth proportional to 994.65, 1,373.25 and 622.18 is: 859.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.65 : 1,373.25 = 622.18 : x
  2. Step 2: Convert to fraction form
    994.65/1,373.25 = 622.18/x
  3. Step 3: Cross multiply
    994.65x = 1,373.25 × 622.18
  4. Step 4: Simplify right side
    994.65x = 854,412.73
  5. Step 5: Solve for x
    x = 854,412.73/994.65
  6. Step 6: Final answer
    x = 859.01

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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.