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Finding the Fourth Proportional to 666.22, 997.27 and 609.52

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Solution

The fourth proportional to 666.22, 997.27 and 609.52 is: 912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.22 : 997.27 = 609.52 : x
  2. Step 2: Convert to fraction form
    666.22/997.27 = 609.52/x
  3. Step 3: Cross multiply
    666.22x = 997.27 × 609.52
  4. Step 4: Simplify right side
    666.22x = 607,856.01
  5. Step 5: Solve for x
    x = 607,856.01/666.22
  6. Step 6: Final answer
    x = 912.40

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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.