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Finding the Fourth Proportional to 982.44, 1,356.48 and 651.38

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Solution

The fourth proportional to 982.44, 1,356.48 and 651.38 is: 899.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.44 : 1,356.48 = 651.38 : x
  2. Step 2: Convert to fraction form
    982.44/1,356.48 = 651.38/x
  3. Step 3: Cross multiply
    982.44x = 1,356.48 × 651.38
  4. Step 4: Simplify right side
    982.44x = 883,577.16
  5. Step 5: Solve for x
    x = 883,577.16/982.44
  6. Step 6: Final answer
    x = 899.37

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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.