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Finding the Fourth Proportional to 333.82, 460.79 and 311.95

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Solution

The fourth proportional to 333.82, 460.79 and 311.95 is: 430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.82 : 460.79 = 311.95 : x
  2. Step 2: Convert to fraction form
    333.82/460.79 = 311.95/x
  3. Step 3: Cross multiply
    333.82x = 460.79 × 311.95
  4. Step 4: Simplify right side
    333.82x = 143,743.63
  5. Step 5: Solve for x
    x = 143,743.63/333.82
  6. Step 6: Final answer
    x = 430.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.