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Finding the Fourth Proportional to 622.38, 933.70 and 189.57

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Solution

The fourth proportional to 622.38, 933.70 and 189.57 is: 284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.38 : 933.70 = 189.57 : x
  2. Step 2: Convert to fraction form
    622.38/933.70 = 189.57/x
  3. Step 3: Cross multiply
    622.38x = 933.70 × 189.57
  4. Step 4: Simplify right side
    622.38x = 177,001.51
  5. Step 5: Solve for x
    x = 177,001.51/622.38
  6. Step 6: Final answer
    x = 284.39

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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.