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Finding the Fourth Proportional to 335.61, 505.27 and 262.87

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Solution

The fourth proportional to 335.61, 505.27 and 262.87 is: 395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.61 : 505.27 = 262.87 : x
  2. Step 2: Convert to fraction form
    335.61/505.27 = 262.87/x
  3. Step 3: Cross multiply
    335.61x = 505.27 × 262.87
  4. Step 4: Simplify right side
    335.61x = 132,820.32
  5. Step 5: Solve for x
    x = 132,820.32/335.61
  6. Step 6: Final answer
    x = 395.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.