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Finding the Fourth Proportional to 317.80, 476.82 and 246.22

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Solution

The fourth proportional to 317.80, 476.82 and 246.22 is: 369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.80 : 476.82 = 246.22 : x
  2. Step 2: Convert to fraction form
    317.80/476.82 = 246.22/x
  3. Step 3: Cross multiply
    317.80x = 476.82 × 246.22
  4. Step 4: Simplify right side
    317.80x = 117,402.62
  5. Step 5: Solve for x
    x = 117,402.62/317.80
  6. Step 6: Final answer
    x = 369.42

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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.