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Finding the Fourth Proportional to 481.16, 721.57 and 172.93

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Solution

The fourth proportional to 481.16, 721.57 and 172.93 is: 259.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.16 : 721.57 = 172.93 : x
  2. Step 2: Convert to fraction form
    481.16/721.57 = 172.93/x
  3. Step 3: Cross multiply
    481.16x = 721.57 × 172.93
  4. Step 4: Simplify right side
    481.16x = 124,782.47
  5. Step 5: Solve for x
    x = 124,782.47/481.16
  6. Step 6: Final answer
    x = 259.33

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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.