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Finding the Fourth Proportional to 649.44, 972.29 and 608.56

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Solution

The fourth proportional to 649.44, 972.29 and 608.56 is: 911.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.44 : 972.29 = 608.56 : x
  2. Step 2: Convert to fraction form
    649.44/972.29 = 608.56/x
  3. Step 3: Cross multiply
    649.44x = 972.29 × 608.56
  4. Step 4: Simplify right side
    649.44x = 591,695.89
  5. Step 5: Solve for x
    x = 591,695.89/649.44
  6. Step 6: Final answer
    x = 911.09

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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.