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Finding the Fourth Proportional to 268.72, 370.88 and 150.75

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Solution

The fourth proportional to 268.72, 370.88 and 150.75 is: 208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.72 : 370.88 = 150.75 : x
  2. Step 2: Convert to fraction form
    268.72/370.88 = 150.75/x
  3. Step 3: Cross multiply
    268.72x = 370.88 × 150.75
  4. Step 4: Simplify right side
    268.72x = 55,908.79
  5. Step 5: Solve for x
    x = 55,908.79/268.72
  6. Step 6: Final answer
    x = 208.05

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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.