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Finding the Fourth Proportional to 295.42, 407.72 and 171.14

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Solution

The fourth proportional to 295.42, 407.72 and 171.14 is: 236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.42 : 407.72 = 171.14 : x
  2. Step 2: Convert to fraction form
    295.42/407.72 = 171.14/x
  3. Step 3: Cross multiply
    295.42x = 407.72 × 171.14
  4. Step 4: Simplify right side
    295.42x = 69,777.20
  5. Step 5: Solve for x
    x = 69,777.20/295.42
  6. Step 6: Final answer
    x = 236.20

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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.