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Finding the Fourth Proportional to 313.82, 435.95 and 310.94

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Solution

The fourth proportional to 313.82, 435.95 and 310.94 is: 431.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.82 : 435.95 = 310.94 : x
  2. Step 2: Convert to fraction form
    313.82/435.95 = 310.94/x
  3. Step 3: Cross multiply
    313.82x = 435.95 × 310.94
  4. Step 4: Simplify right side
    313.82x = 135,554.29
  5. Step 5: Solve for x
    x = 135,554.29/313.82
  6. Step 6: Final answer
    x = 431.95

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.