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Finding the Fourth Proportional to 649.56, 897.18 and 563.31

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Solution

The fourth proportional to 649.56, 897.18 and 563.31 is: 778.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.56 : 897.18 = 563.31 : x
  2. Step 2: Convert to fraction form
    649.56/897.18 = 563.31/x
  3. Step 3: Cross multiply
    649.56x = 897.18 × 563.31
  4. Step 4: Simplify right side
    649.56x = 505,390.47
  5. Step 5: Solve for x
    x = 505,390.47/649.56
  6. Step 6: Final answer
    x = 778.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.