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Finding the Fourth Proportional to 622.10, 932.56 and 275.21

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Solution

The fourth proportional to 622.10, 932.56 and 275.21 is: 412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.10 : 932.56 = 275.21 : x
  2. Step 2: Convert to fraction form
    622.10/932.56 = 275.21/x
  3. Step 3: Cross multiply
    622.10x = 932.56 × 275.21
  4. Step 4: Simplify right side
    622.10x = 256,649.84
  5. Step 5: Solve for x
    x = 256,649.84/622.10
  6. Step 6: Final answer
    x = 412.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.