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Finding the Fourth Proportional to 171.77, 236.84 and 148.28

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Solution

The fourth proportional to 171.77, 236.84 and 148.28 is: 204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.77 : 236.84 = 148.28 : x
  2. Step 2: Convert to fraction form
    171.77/236.84 = 148.28/x
  3. Step 3: Cross multiply
    171.77x = 236.84 × 148.28
  4. Step 4: Simplify right side
    171.77x = 35,116.71
  5. Step 5: Solve for x
    x = 35,116.71/171.77
  6. Step 6: Final answer
    x = 204.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.