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Finding the Fourth Proportional to 529.97, 795.12 and 221.90

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Solution

The fourth proportional to 529.97, 795.12 and 221.90 is: 332.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.97 : 795.12 = 221.90 : x
  2. Step 2: Convert to fraction form
    529.97/795.12 = 221.90/x
  3. Step 3: Cross multiply
    529.97x = 795.12 × 221.90
  4. Step 4: Simplify right side
    529.97x = 176,439.12
  5. Step 5: Solve for x
    x = 176,439.12/529.97
  6. Step 6: Final answer
    x = 332.93

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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.