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Finding the Fourth Proportional to 521.92, 720.07 and 335.51

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Solution

The fourth proportional to 521.92, 720.07 and 335.51 is: 462.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.92 : 720.07 = 335.51 : x
  2. Step 2: Convert to fraction form
    521.92/720.07 = 335.51/x
  3. Step 3: Cross multiply
    521.92x = 720.07 × 335.51
  4. Step 4: Simplify right side
    521.92x = 241,590.69
  5. Step 5: Solve for x
    x = 241,590.69/521.92
  6. Step 6: Final answer
    x = 462.89

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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.