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Finding the Fourth Proportional to 521.54, 720.06 and 335.10

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Solution

The fourth proportional to 521.54, 720.06 and 335.10 is: 462.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.54 : 720.06 = 335.10 : x
  2. Step 2: Convert to fraction form
    521.54/720.06 = 335.10/x
  3. Step 3: Cross multiply
    521.54x = 720.06 × 335.10
  4. Step 4: Simplify right side
    521.54x = 241,292.11
  5. Step 5: Solve for x
    x = 241,292.11/521.54
  6. Step 6: Final answer
    x = 462.65

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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.