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Finding the Fourth Proportional to 317.17, 437.66 and 212.38

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Solution

The fourth proportional to 317.17, 437.66 and 212.38 is: 293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.17 : 437.66 = 212.38 : x
  2. Step 2: Convert to fraction form
    317.17/437.66 = 212.38/x
  3. Step 3: Cross multiply
    317.17x = 437.66 × 212.38
  4. Step 4: Simplify right side
    317.17x = 92,948.04
  5. Step 5: Solve for x
    x = 92,948.04/317.17
  6. Step 6: Final answer
    x = 293.05

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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.