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Finding the Fourth Proportional to 268.68, 372.51 and 263.40

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Solution

The fourth proportional to 268.68, 372.51 and 263.40 is: 365.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.68 : 372.51 = 263.40 : x
  2. Step 2: Convert to fraction form
    268.68/372.51 = 263.40/x
  3. Step 3: Cross multiply
    268.68x = 372.51 × 263.40
  4. Step 4: Simplify right side
    268.68x = 98,119.13
  5. Step 5: Solve for x
    x = 98,119.13/268.68
  6. Step 6: Final answer
    x = 365.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.