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Finding the Fourth Proportional to 276.14, 380.38 and 210.53

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Solution

The fourth proportional to 276.14, 380.38 and 210.53 is: 290.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.14 : 380.38 = 210.53 : x
  2. Step 2: Convert to fraction form
    276.14/380.38 = 210.53/x
  3. Step 3: Cross multiply
    276.14x = 380.38 × 210.53
  4. Step 4: Simplify right side
    276.14x = 80,080.35
  5. Step 5: Solve for x
    x = 80,080.35/276.14
  6. Step 6: Final answer
    x = 290.00

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Why These Related Problems?

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