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Finding the Fourth Proportional to 256.68, 351.76 and 232.08

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Solution

The fourth proportional to 256.68, 351.76 and 232.08 is: 318.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.68 : 351.76 = 232.08 : x
  2. Step 2: Convert to fraction form
    256.68/351.76 = 232.08/x
  3. Step 3: Cross multiply
    256.68x = 351.76 × 232.08
  4. Step 4: Simplify right side
    256.68x = 81,636.46
  5. Step 5: Solve for x
    x = 81,636.46/256.68
  6. Step 6: Final answer
    x = 318.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.