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Finding the Fourth Proportional to 622.44, 933.80 and 189.64

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Solution

The fourth proportional to 622.44, 933.80 and 189.64 is: 284.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.44 : 933.80 = 189.64 : x
  2. Step 2: Convert to fraction form
    622.44/933.80 = 189.64/x
  3. Step 3: Cross multiply
    622.44x = 933.80 × 189.64
  4. Step 4: Simplify right side
    622.44x = 177,085.83
  5. Step 5: Solve for x
    x = 177,085.83/622.44
  6. Step 6: Final answer
    x = 284.50

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Similar ratio
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1.5x scale

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.