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Finding the Fourth Proportional to 268.95, 404.10 and 171.50

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Solution

The fourth proportional to 268.95, 404.10 and 171.50 is: 257.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.95 : 404.10 = 171.50 : x
  2. Step 2: Convert to fraction form
    268.95/404.10 = 171.50/x
  3. Step 3: Cross multiply
    268.95x = 404.10 × 171.50
  4. Step 4: Simplify right side
    268.95x = 69,301.13
  5. Step 5: Solve for x
    x = 69,301.13/268.95
  6. Step 6: Final answer
    x = 257.67

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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.