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Finding the Fourth Proportional to 984.39, 1,358.42 and 536.25

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Solution

The fourth proportional to 984.39, 1,358.42 and 536.25 is: 740.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.39 : 1,358.42 = 536.25 : x
  2. Step 2: Convert to fraction form
    984.39/1,358.42 = 536.25/x
  3. Step 3: Cross multiply
    984.39x = 1,358.42 × 536.25
  4. Step 4: Simplify right side
    984.39x = 728,452.73
  5. Step 5: Solve for x
    x = 728,452.73/984.39
  6. Step 6: Final answer
    x = 740.00

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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.