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Finding the Fourth Proportional to 259.64, 390.26 and 246.84

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Solution

The fourth proportional to 259.64, 390.26 and 246.84 is: 371.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.64 : 390.26 = 246.84 : x
  2. Step 2: Convert to fraction form
    259.64/390.26 = 246.84/x
  3. Step 3: Cross multiply
    259.64x = 390.26 × 246.84
  4. Step 4: Simplify right side
    259.64x = 96,331.78
  5. Step 5: Solve for x
    x = 96,331.78/259.64
  6. Step 6: Final answer
    x = 371.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.