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Finding the Fourth Proportional to 606.82, 910.12 and 216.80

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Solution

The fourth proportional to 606.82, 910.12 and 216.80 is: 325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.82 : 910.12 = 216.80 : x
  2. Step 2: Convert to fraction form
    606.82/910.12 = 216.80/x
  3. Step 3: Cross multiply
    606.82x = 910.12 × 216.80
  4. Step 4: Simplify right side
    606.82x = 197,312.93
  5. Step 5: Solve for x
    x = 197,312.93/606.82
  6. Step 6: Final answer
    x = 325.16

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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.