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Finding the Fourth Proportional to 982.09, 1,473.03 and 615.77

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Solution

The fourth proportional to 982.09, 1,473.03 and 615.77 is: 923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.09 : 1,473.03 = 615.77 : x
  2. Step 2: Convert to fraction form
    982.09/1,473.03 = 615.77/x
  3. Step 3: Cross multiply
    982.09x = 1,473.03 × 615.77
  4. Step 4: Simplify right side
    982.09x = 907,037.24
  5. Step 5: Solve for x
    x = 907,037.24/982.09
  6. Step 6: Final answer
    x = 923.58

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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.