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Finding the Fourth Proportional to 468.88, 645.06 and 406.24

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Solution

The fourth proportional to 468.88, 645.06 and 406.24 is: 558.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.88 : 645.06 = 406.24 : x
  2. Step 2: Convert to fraction form
    468.88/645.06 = 406.24/x
  3. Step 3: Cross multiply
    468.88x = 645.06 × 406.24
  4. Step 4: Simplify right side
    468.88x = 262,049.17
  5. Step 5: Solve for x
    x = 262,049.17/468.88
  6. Step 6: Final answer
    x = 558.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.