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Finding the Fourth Proportional to 242.24, 361.47 and 213.08

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Solution

The fourth proportional to 242.24, 361.47 and 213.08 is: 317.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.24 : 361.47 = 213.08 : x
  2. Step 2: Convert to fraction form
    242.24/361.47 = 213.08/x
  3. Step 3: Cross multiply
    242.24x = 361.47 × 213.08
  4. Step 4: Simplify right side
    242.24x = 77,020.96
  5. Step 5: Solve for x
    x = 77,020.96/242.24
  6. Step 6: Final answer
    x = 317.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.