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Finding the Fourth Proportional to 622.66, 933.72 and 189.72

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Solution

The fourth proportional to 622.66, 933.72 and 189.72 is: 284.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.66 : 933.72 = 189.72 : x
  2. Step 2: Convert to fraction form
    622.66/933.72 = 189.72/x
  3. Step 3: Cross multiply
    622.66x = 933.72 × 189.72
  4. Step 4: Simplify right side
    622.66x = 177,145.36
  5. Step 5: Solve for x
    x = 177,145.36/622.66
  6. Step 6: Final answer
    x = 284.50

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Double scale
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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.