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Finding the Fourth Proportional to 521.73, 720.16 and 335.57

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Solution

The fourth proportional to 521.73, 720.16 and 335.57 is: 463.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.73 : 720.16 = 335.57 : x
  2. Step 2: Convert to fraction form
    521.73/720.16 = 335.57/x
  3. Step 3: Cross multiply
    521.73x = 720.16 × 335.57
  4. Step 4: Simplify right side
    521.73x = 241,659.65
  5. Step 5: Solve for x
    x = 241,659.65/521.73
  6. Step 6: Final answer
    x = 463.19

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