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Finding the Fourth Proportional to 528.93, 792.71 and 220.43

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Solution

The fourth proportional to 528.93, 792.71 and 220.43 is: 330.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.93 : 792.71 = 220.43 : x
  2. Step 2: Convert to fraction form
    528.93/792.71 = 220.43/x
  3. Step 3: Cross multiply
    528.93x = 792.71 × 220.43
  4. Step 4: Simplify right side
    528.93x = 174,737.07
  5. Step 5: Solve for x
    x = 174,737.07/528.93
  6. Step 6: Final answer
    x = 330.36

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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.