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Finding the Fourth Proportional to 982.52, 1,355.12 and 650.84

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Solution

The fourth proportional to 982.52, 1,355.12 and 650.84 is: 897.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.52 : 1,355.12 = 650.84 : x
  2. Step 2: Convert to fraction form
    982.52/1,355.12 = 650.84/x
  3. Step 3: Cross multiply
    982.52x = 1,355.12 × 650.84
  4. Step 4: Simplify right side
    982.52x = 881,966.30
  5. Step 5: Solve for x
    x = 881,966.30/982.52
  6. Step 6: Final answer
    x = 897.66

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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.