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Finding the Fourth Proportional to 259.76, 386.38 and 246.80

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Solution

The fourth proportional to 259.76, 386.38 and 246.80 is: 367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.76 : 386.38 = 246.80 : x
  2. Step 2: Convert to fraction form
    259.76/386.38 = 246.80/x
  3. Step 3: Cross multiply
    259.76x = 386.38 × 246.80
  4. Step 4: Simplify right side
    259.76x = 95,358.58
  5. Step 5: Solve for x
    x = 95,358.58/259.76
  6. Step 6: Final answer
    x = 367.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.