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Finding the Fourth Proportional to 335.36, 501.76 and 206.72

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Solution

The fourth proportional to 335.36, 501.76 and 206.72 is: 309.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.36 : 501.76 = 206.72 : x
  2. Step 2: Convert to fraction form
    335.36/501.76 = 206.72/x
  3. Step 3: Cross multiply
    335.36x = 501.76 × 206.72
  4. Step 4: Simplify right side
    335.36x = 103,723.83
  5. Step 5: Solve for x
    x = 103,723.83/335.36
  6. Step 6: Final answer
    x = 309.29

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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.