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Finding the Fourth Proportional to 468.24, 703.28 and 381.64

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Solution

The fourth proportional to 468.24, 703.28 and 381.64 is: 573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.24 : 703.28 = 381.64 : x
  2. Step 2: Convert to fraction form
    468.24/703.28 = 381.64/x
  3. Step 3: Cross multiply
    468.24x = 703.28 × 381.64
  4. Step 4: Simplify right side
    468.24x = 268,399.78
  5. Step 5: Solve for x
    x = 268,399.78/468.24
  6. Step 6: Final answer
    x = 573.21

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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.