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Finding the Fourth Proportional to 212.41, 318.27 and 160.98

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Solution

The fourth proportional to 212.41, 318.27 and 160.98 is: 241.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.41 : 318.27 = 160.98 : x
  2. Step 2: Convert to fraction form
    212.41/318.27 = 160.98/x
  3. Step 3: Cross multiply
    212.41x = 318.27 × 160.98
  4. Step 4: Simplify right side
    212.41x = 51,235.10
  5. Step 5: Solve for x
    x = 51,235.10/212.41
  6. Step 6: Final answer
    x = 241.21

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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.