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Finding the Fourth Proportional to 394.75, 547.57 and 373.99

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Solution

The fourth proportional to 394.75, 547.57 and 373.99 is: 518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.75 : 547.57 = 373.99 : x
  2. Step 2: Convert to fraction form
    394.75/547.57 = 373.99/x
  3. Step 3: Cross multiply
    394.75x = 547.57 × 373.99
  4. Step 4: Simplify right side
    394.75x = 204,781.10
  5. Step 5: Solve for x
    x = 204,781.10/394.75
  6. Step 6: Final answer
    x = 518.77

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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.