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Finding the Fourth Proportional to 529.90, 794.27 and 221.67

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Solution

The fourth proportional to 529.90, 794.27 and 221.67 is: 332.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.90 : 794.27 = 221.67 : x
  2. Step 2: Convert to fraction form
    529.90/794.27 = 221.67/x
  3. Step 3: Cross multiply
    529.90x = 794.27 × 221.67
  4. Step 4: Simplify right side
    529.90x = 176,061.86
  5. Step 5: Solve for x
    x = 176,061.86/529.90
  6. Step 6: Final answer
    x = 332.26

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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.