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Finding the Fourth Proportional to 371.55, 553.95 and 361.94

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Solution

The fourth proportional to 371.55, 553.95 and 361.94 is: 539.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.55 : 553.95 = 361.94 : x
  2. Step 2: Convert to fraction form
    371.55/553.95 = 361.94/x
  3. Step 3: Cross multiply
    371.55x = 553.95 × 361.94
  4. Step 4: Simplify right side
    371.55x = 200,495.25
  5. Step 5: Solve for x
    x = 200,495.25/371.55
  6. Step 6: Final answer
    x = 539.62

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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.