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Finding the Fourth Proportional to 622.33, 932.28 and 405.25

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Solution

The fourth proportional to 622.33, 932.28 and 405.25 is: 607.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.33 : 932.28 = 405.25 : x
  2. Step 2: Convert to fraction form
    622.33/932.28 = 405.25/x
  3. Step 3: Cross multiply
    622.33x = 932.28 × 405.25
  4. Step 4: Simplify right side
    622.33x = 377,806.47
  5. Step 5: Solve for x
    x = 377,806.47/622.33
  6. Step 6: Final answer
    x = 607.08

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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.