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Finding the Fourth Proportional to 310.95, 466.39 and 189.18

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Solution

The fourth proportional to 310.95, 466.39 and 189.18 is: 283.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.95 : 466.39 = 189.18 : x
  2. Step 2: Convert to fraction form
    310.95/466.39 = 189.18/x
  3. Step 3: Cross multiply
    310.95x = 466.39 × 189.18
  4. Step 4: Simplify right side
    310.95x = 88,231.66
  5. Step 5: Solve for x
    x = 88,231.66/310.95
  6. Step 6: Final answer
    x = 283.75

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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.