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Finding the Fourth Proportional to 654.44, 986.36 and 564.22

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Solution

The fourth proportional to 654.44, 986.36 and 564.22 is: 850.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.44 : 986.36 = 564.22 : x
  2. Step 2: Convert to fraction form
    654.44/986.36 = 564.22/x
  3. Step 3: Cross multiply
    654.44x = 986.36 × 564.22
  4. Step 4: Simplify right side
    654.44x = 556,521.22
  5. Step 5: Solve for x
    x = 556,521.22/654.44
  6. Step 6: Final answer
    x = 850.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.