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Finding the Fourth Proportional to 606.27, 909.07 and 281.35

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Solution

The fourth proportional to 606.27, 909.07 and 281.35 is: 421.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.27 : 909.07 = 281.35 : x
  2. Step 2: Convert to fraction form
    606.27/909.07 = 281.35/x
  3. Step 3: Cross multiply
    606.27x = 909.07 × 281.35
  4. Step 4: Simplify right side
    606.27x = 255,766.84
  5. Step 5: Solve for x
    x = 255,766.84/606.27
  6. Step 6: Final answer
    x = 421.87

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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.