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Finding the Fourth Proportional to 606.54, 909.54 and 216.66

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Solution

The fourth proportional to 606.54, 909.54 and 216.66 is: 324.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.54 : 909.54 = 216.66 : x
  2. Step 2: Convert to fraction form
    606.54/909.54 = 216.66/x
  3. Step 3: Cross multiply
    606.54x = 909.54 × 216.66
  4. Step 4: Simplify right side
    606.54x = 197,060.94
  5. Step 5: Solve for x
    x = 197,060.94/606.54
  6. Step 6: Final answer
    x = 324.89

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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.