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Finding the Fourth Proportional to 606.64, 910.02 and 221.86

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Solution

The fourth proportional to 606.64, 910.02 and 221.86 is: 332.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.64 : 910.02 = 221.86 : x
  2. Step 2: Convert to fraction form
    606.64/910.02 = 221.86/x
  3. Step 3: Cross multiply
    606.64x = 910.02 × 221.86
  4. Step 4: Simplify right side
    606.64x = 201,897.04
  5. Step 5: Solve for x
    x = 201,897.04/606.64
  6. Step 6: Final answer
    x = 332.81

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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.