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Finding the Fourth Proportional to 349.81, 483.14 and 279.15

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Solution

The fourth proportional to 349.81, 483.14 and 279.15 is: 385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.81 : 483.14 = 279.15 : x
  2. Step 2: Convert to fraction form
    349.81/483.14 = 279.15/x
  3. Step 3: Cross multiply
    349.81x = 483.14 × 279.15
  4. Step 4: Simplify right side
    349.81x = 134,868.53
  5. Step 5: Solve for x
    x = 134,868.53/349.81
  6. Step 6: Final answer
    x = 385.55

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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.