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Finding the Fourth Proportional to 197.48, 295.86 and 143.24

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Solution

The fourth proportional to 197.48, 295.86 and 143.24 is: 214.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.48 : 295.86 = 143.24 : x
  2. Step 2: Convert to fraction form
    197.48/295.86 = 143.24/x
  3. Step 3: Cross multiply
    197.48x = 295.86 × 143.24
  4. Step 4: Simplify right side
    197.48x = 42,378.99
  5. Step 5: Solve for x
    x = 42,378.99/197.48
  6. Step 6: Final answer
    x = 214.60

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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.