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Finding the Fourth Proportional to 335.06, 501.90 and 261.86

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Solution

The fourth proportional to 335.06, 501.90 and 261.86 is: 392.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.06 : 501.90 = 261.86 : x
  2. Step 2: Convert to fraction form
    335.06/501.90 = 261.86/x
  3. Step 3: Cross multiply
    335.06x = 501.90 × 261.86
  4. Step 4: Simplify right side
    335.06x = 131,424.04
  5. Step 5: Solve for x
    x = 131,424.04/335.06
  6. Step 6: Final answer
    x = 392.24

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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.