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Finding the Fourth Proportional to 242.38, 361.74 and 235.90

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Solution

The fourth proportional to 242.38, 361.74 and 235.90 is: 352.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.38 : 361.74 = 235.90 : x
  2. Step 2: Convert to fraction form
    242.38/361.74 = 235.90/x
  3. Step 3: Cross multiply
    242.38x = 361.74 × 235.90
  4. Step 4: Simplify right side
    242.38x = 85,334.47
  5. Step 5: Solve for x
    x = 85,334.47/242.38
  6. Step 6: Final answer
    x = 352.07

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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.