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Finding the Fourth Proportional to 334.40, 502.11 and 280.06

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Solution

The fourth proportional to 334.40, 502.11 and 280.06 is: 420.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.40 : 502.11 = 280.06 : x
  2. Step 2: Convert to fraction form
    334.40/502.11 = 280.06/x
  3. Step 3: Cross multiply
    334.40x = 502.11 × 280.06
  4. Step 4: Simplify right side
    334.40x = 140,619.67
  5. Step 5: Solve for x
    x = 140,619.67/334.40
  6. Step 6: Final answer
    x = 420.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.