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Finding the Fourth Proportional to 363.07, 543.39 and 281.67

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Solution

The fourth proportional to 363.07, 543.39 and 281.67 is: 421.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.07 : 543.39 = 281.67 : x
  2. Step 2: Convert to fraction form
    363.07/543.39 = 281.67/x
  3. Step 3: Cross multiply
    363.07x = 543.39 × 281.67
  4. Step 4: Simplify right side
    363.07x = 153,056.66
  5. Step 5: Solve for x
    x = 153,056.66/363.07
  6. Step 6: Final answer
    x = 421.56

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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.