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Finding the Fourth Proportional to 362.24, 543.05 and 142.75

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Solution

The fourth proportional to 362.24, 543.05 and 142.75 is: 214.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.24 : 543.05 = 142.75 : x
  2. Step 2: Convert to fraction form
    362.24/543.05 = 142.75/x
  3. Step 3: Cross multiply
    362.24x = 543.05 × 142.75
  4. Step 4: Simplify right side
    362.24x = 77,520.39
  5. Step 5: Solve for x
    x = 77,520.39/362.24
  6. Step 6: Final answer
    x = 214.00

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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.