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Finding the Fourth Proportional to 484.91, 727.30 and 155.81

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Solution

The fourth proportional to 484.91, 727.30 and 155.81 is: 233.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.91 : 727.30 = 155.81 : x
  2. Step 2: Convert to fraction form
    484.91/727.30 = 155.81/x
  3. Step 3: Cross multiply
    484.91x = 727.30 × 155.81
  4. Step 4: Simplify right side
    484.91x = 113,317.99
  5. Step 5: Solve for x
    x = 113,317.99/484.91
  6. Step 6: Final answer
    x = 233.69

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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.