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Finding the Fourth Proportional to 175.18, 262.61 and 66.94

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Solution

The fourth proportional to 175.18, 262.61 and 66.94 is: 100.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.18 : 262.61 = 66.94 : x
  2. Step 2: Convert to fraction form
    175.18/262.61 = 66.94/x
  3. Step 3: Cross multiply
    175.18x = 262.61 × 66.94
  4. Step 4: Simplify right side
    175.18x = 17,579.11
  5. Step 5: Solve for x
    x = 17,579.11/175.18
  6. Step 6: Final answer
    x = 100.35

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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.