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Finding the Fourth Proportional to 908.24, 1,361.55 and 474.62

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Solution

The fourth proportional to 908.24, 1,361.55 and 474.62 is: 711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.24 : 1,361.55 = 474.62 : x
  2. Step 2: Convert to fraction form
    908.24/1,361.55 = 474.62/x
  3. Step 3: Cross multiply
    908.24x = 1,361.55 × 474.62
  4. Step 4: Simplify right side
    908.24x = 646,218.86
  5. Step 5: Solve for x
    x = 646,218.86/908.24
  6. Step 6: Final answer
    x = 711.51

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Double scale
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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.