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Finding the Fourth Proportional to 622, 857.94 and 373.12

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Solution

The fourth proportional to 622, 857.94 and 373.12 is: 514.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    622 : 857.94 = 373.12 : x
  2. Step 2: Convert to fraction form
    622/857.94 = 373.12/x
  3. Step 3: Cross multiply
    622x = 857.94 × 373.12
  4. Step 4: Simplify right side
    622x = 320,114.57
  5. Step 5: Solve for x
    x = 320,114.57/622
  6. Step 6: Final answer
    x = 514.65

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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.