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Finding the Fourth Proportional to 391.02, 583.88 and 349.62

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Solution

The fourth proportional to 391.02, 583.88 and 349.62 is: 522.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.02 : 583.88 = 349.62 : x
  2. Step 2: Convert to fraction form
    391.02/583.88 = 349.62/x
  3. Step 3: Cross multiply
    391.02x = 583.88 × 349.62
  4. Step 4: Simplify right side
    391.02x = 204,134.38
  5. Step 5: Solve for x
    x = 204,134.38/391.02
  6. Step 6: Final answer
    x = 522.06

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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.