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Finding the Fourth Proportional to 528.11, 792.85 and 406.46

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Solution

The fourth proportional to 528.11, 792.85 and 406.46 is: 610.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.11 : 792.85 = 406.46 : x
  2. Step 2: Convert to fraction form
    528.11/792.85 = 406.46/x
  3. Step 3: Cross multiply
    528.11x = 792.85 × 406.46
  4. Step 4: Simplify right side
    528.11x = 322,261.81
  5. Step 5: Solve for x
    x = 322,261.81/528.11
  6. Step 6: Final answer
    x = 610.22

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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.