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Finding the Fourth Proportional to 371.99, 553.76 and 354.30

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Solution

The fourth proportional to 371.99, 553.76 and 354.30 is: 527.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.99 : 553.76 = 354.30 : x
  2. Step 2: Convert to fraction form
    371.99/553.76 = 354.30/x
  3. Step 3: Cross multiply
    371.99x = 553.76 × 354.30
  4. Step 4: Simplify right side
    371.99x = 196,195.40
  5. Step 5: Solve for x
    x = 196,195.40/371.99
  6. Step 6: Final answer
    x = 527.43

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