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Finding the Fourth Proportional to 529.58, 793.74 and 221.04

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Solution

The fourth proportional to 529.58, 793.74 and 221.04 is: 331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.58 : 793.74 = 221.04 : x
  2. Step 2: Convert to fraction form
    529.58/793.74 = 221.04/x
  3. Step 3: Cross multiply
    529.58x = 793.74 × 221.04
  4. Step 4: Simplify right side
    529.58x = 175,448.29
  5. Step 5: Solve for x
    x = 175,448.29/529.58
  6. Step 6: Final answer
    x = 331.30

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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.