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Finding the Fourth Proportional to 984.38, 1,476.87 and 368.15

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Solution

The fourth proportional to 984.38, 1,476.87 and 368.15 is: 552.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.38 : 1,476.87 = 368.15 : x
  2. Step 2: Convert to fraction form
    984.38/1,476.87 = 368.15/x
  3. Step 3: Cross multiply
    984.38x = 1,476.87 × 368.15
  4. Step 4: Simplify right side
    984.38x = 543,702.48
  5. Step 5: Solve for x
    x = 543,702.48/984.38
  6. Step 6: Final answer
    x = 552.33

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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.