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Finding the Fourth Proportional to 481.16, 720.52 and 345.08

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Solution

The fourth proportional to 481.16, 720.52 and 345.08 is: 516.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.16 : 720.52 = 345.08 : x
  2. Step 2: Convert to fraction form
    481.16/720.52 = 345.08/x
  3. Step 3: Cross multiply
    481.16x = 720.52 × 345.08
  4. Step 4: Simplify right side
    481.16x = 248,637.04
  5. Step 5: Solve for x
    x = 248,637.04/481.16
  6. Step 6: Final answer
    x = 516.75

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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.