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Finding the Fourth Proportional to 295.59, 407.90 and 171.15

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Solution

The fourth proportional to 295.59, 407.90 and 171.15 is: 236.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.59 : 407.90 = 171.15 : x
  2. Step 2: Convert to fraction form
    295.59/407.90 = 171.15/x
  3. Step 3: Cross multiply
    295.59x = 407.90 × 171.15
  4. Step 4: Simplify right side
    295.59x = 69,811.23
  5. Step 5: Solve for x
    x = 69,811.23/295.59
  6. Step 6: Final answer
    x = 236.18

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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.