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Finding the Fourth Proportional to 994.95, 1,373.63 and 622.25

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Solution

The fourth proportional to 994.95, 1,373.63 and 622.25 is: 859.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.95 : 1,373.63 = 622.25 : x
  2. Step 2: Convert to fraction form
    994.95/1,373.63 = 622.25/x
  3. Step 3: Cross multiply
    994.95x = 1,373.63 × 622.25
  4. Step 4: Simplify right side
    994.95x = 854,741.27
  5. Step 5: Solve for x
    x = 854,741.27/994.95
  6. Step 6: Final answer
    x = 859.08

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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.