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Finding the Fourth Proportional to 606.72, 910.08 and 216.80

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Solution

The fourth proportional to 606.72, 910.08 and 216.80 is: 325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.72 : 910.08 = 216.80 : x
  2. Step 2: Convert to fraction form
    606.72/910.08 = 216.80/x
  3. Step 3: Cross multiply
    606.72x = 910.08 × 216.80
  4. Step 4: Simplify right side
    606.72x = 197,305.34
  5. Step 5: Solve for x
    x = 197,305.34/606.72
  6. Step 6: Final answer
    x = 325.20

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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.