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Finding the Fourth Proportional to 394.77, 547.32 and 372.90

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Solution

The fourth proportional to 394.77, 547.32 and 372.90 is: 517.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.77 : 547.32 = 372.90 : x
  2. Step 2: Convert to fraction form
    394.77/547.32 = 372.90/x
  3. Step 3: Cross multiply
    394.77x = 547.32 × 372.90
  4. Step 4: Simplify right side
    394.77x = 204,095.63
  5. Step 5: Solve for x
    x = 204,095.63/394.77
  6. Step 6: Final answer
    x = 517.00

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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.