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Finding the Fourth Proportional to 409.72, 565.08 and 335.87

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Solution

The fourth proportional to 409.72, 565.08 and 335.87 is: 463.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.72 : 565.08 = 335.87 : x
  2. Step 2: Convert to fraction form
    409.72/565.08 = 335.87/x
  3. Step 3: Cross multiply
    409.72x = 565.08 × 335.87
  4. Step 4: Simplify right side
    409.72x = 189,793.42
  5. Step 5: Solve for x
    x = 189,793.42/409.72
  6. Step 6: Final answer
    x = 463.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.