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Finding the Fourth Proportional to 529.35, 793.93 and 221.12

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Solution

The fourth proportional to 529.35, 793.93 and 221.12 is: 331.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.35 : 793.93 = 221.12 : x
  2. Step 2: Convert to fraction form
    529.35/793.93 = 221.12/x
  3. Step 3: Cross multiply
    529.35x = 793.93 × 221.12
  4. Step 4: Simplify right side
    529.35x = 175,557.36
  5. Step 5: Solve for x
    x = 175,557.36/529.35
  6. Step 6: Final answer
    x = 331.64

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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.