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Finding the Fourth Proportional to 229.14, 345.06 and 171.75

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Solution

The fourth proportional to 229.14, 345.06 and 171.75 is: 258.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.14 : 345.06 = 171.75 : x
  2. Step 2: Convert to fraction form
    229.14/345.06 = 171.75/x
  3. Step 3: Cross multiply
    229.14x = 345.06 × 171.75
  4. Step 4: Simplify right side
    229.14x = 59,264.06
  5. Step 5: Solve for x
    x = 59,264.06/229.14
  6. Step 6: Final answer
    x = 258.64

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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.