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Finding the Fourth Proportional to 253.76, 382.02 and 173.12

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Solution

The fourth proportional to 253.76, 382.02 and 173.12 is: 260.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.76 : 382.02 = 173.12 : x
  2. Step 2: Convert to fraction form
    253.76/382.02 = 173.12/x
  3. Step 3: Cross multiply
    253.76x = 382.02 × 173.12
  4. Step 4: Simplify right side
    253.76x = 66,132.74
  5. Step 5: Solve for x
    x = 66,132.74/253.76
  6. Step 6: Final answer
    x = 260.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.