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Finding the Fourth Proportional to 193.20, 288.48 and 175.20

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Solution

The fourth proportional to 193.20, 288.48 and 175.20 is: 261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.20 : 288.48 = 175.20 : x
  2. Step 2: Convert to fraction form
    193.20/288.48 = 175.20/x
  3. Step 3: Cross multiply
    193.20x = 288.48 × 175.20
  4. Step 4: Simplify right side
    193.20x = 50,541.70
  5. Step 5: Solve for x
    x = 50,541.70/193.20
  6. Step 6: Final answer
    x = 261.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.