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Finding the Fourth Proportional to 662.98, 992.42 and 564.56

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Solution

The fourth proportional to 662.98, 992.42 and 564.56 is: 845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.98 : 992.42 = 564.56 : x
  2. Step 2: Convert to fraction form
    662.98/992.42 = 564.56/x
  3. Step 3: Cross multiply
    662.98x = 992.42 × 564.56
  4. Step 4: Simplify right side
    662.98x = 560,281.53
  5. Step 5: Solve for x
    x = 560,281.53/662.98
  6. Step 6: Final answer
    x = 845.10

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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.