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Finding the Fourth Proportional to 1,520.81, 2,281.21 and 366.56

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Solution

The fourth proportional to 1,520.81, 2,281.21 and 366.56 is: 549.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.81 : 2,281.21 = 366.56 : x
  2. Step 2: Convert to fraction form
    1,520.81/2,281.21 = 366.56/x
  3. Step 3: Cross multiply
    1,520.81x = 2,281.21 × 366.56
  4. Step 4: Simplify right side
    1,520.81x = 836,188.02
  5. Step 5: Solve for x
    x = 836,188.02/1,520.81
  6. Step 6: Final answer
    x = 549.83

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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.