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Finding the Fourth Proportional to 402.37, 553.89 and 350.53

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Solution

The fourth proportional to 402.37, 553.89 and 350.53 is: 482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.37 : 553.89 = 350.53 : x
  2. Step 2: Convert to fraction form
    402.37/553.89 = 350.53/x
  3. Step 3: Cross multiply
    402.37x = 553.89 × 350.53
  4. Step 4: Simplify right side
    402.37x = 194,155.06
  5. Step 5: Solve for x
    x = 194,155.06/402.37
  6. Step 6: Final answer
    x = 482.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.