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Finding the Fourth Proportional to 259.79, 387.47 and 246.11

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Solution

The fourth proportional to 259.79, 387.47 and 246.11 is: 367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.79 : 387.47 = 246.11 : x
  2. Step 2: Convert to fraction form
    259.79/387.47 = 246.11/x
  3. Step 3: Cross multiply
    259.79x = 387.47 × 246.11
  4. Step 4: Simplify right side
    259.79x = 95,357.07
  5. Step 5: Solve for x
    x = 95,357.07/259.79
  6. Step 6: Final answer
    x = 367.06

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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.