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Finding the Fourth Proportional to 984.80, 1,476.38 and 464.53

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Solution

The fourth proportional to 984.80, 1,476.38 and 464.53 is: 696.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.80 : 1,476.38 = 464.53 : x
  2. Step 2: Convert to fraction form
    984.80/1,476.38 = 464.53/x
  3. Step 3: Cross multiply
    984.80x = 1,476.38 × 464.53
  4. Step 4: Simplify right side
    984.80x = 685,820.27
  5. Step 5: Solve for x
    x = 685,820.27/984.80
  6. Step 6: Final answer
    x = 696.41

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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.