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Finding the Fourth Proportional to 165.29, 248.05 and 57.08

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Solution

The fourth proportional to 165.29, 248.05 and 57.08 is: 85.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.29 : 248.05 = 57.08 : x
  2. Step 2: Convert to fraction form
    165.29/248.05 = 57.08/x
  3. Step 3: Cross multiply
    165.29x = 248.05 × 57.08
  4. Step 4: Simplify right side
    165.29x = 14,158.24
  5. Step 5: Solve for x
    x = 14,158.24/165.29
  6. Step 6: Final answer
    x = 85.66

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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.