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Finding the Fourth Proportional to 982.50, 1,346.04 and 945.60

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Solution

The fourth proportional to 982.50, 1,346.04 and 945.60 is: 1,295.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.50 : 1,346.04 = 945.60 : x
  2. Step 2: Convert to fraction form
    982.50/1,346.04 = 945.60/x
  3. Step 3: Cross multiply
    982.50x = 1,346.04 × 945.60
  4. Step 4: Simplify right side
    982.50x = 1,272,815.42
  5. Step 5: Solve for x
    x = 1,272,815.42/982.50
  6. Step 6: Final answer
    x = 1,295.49

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.