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Finding the Fourth Proportional to 510.16, 764.60 and 221.84

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Solution

The fourth proportional to 510.16, 764.60 and 221.84 is: 332.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.16 : 764.60 = 221.84 : x
  2. Step 2: Convert to fraction form
    510.16/764.60 = 221.84/x
  3. Step 3: Cross multiply
    510.16x = 764.60 × 221.84
  4. Step 4: Simplify right side
    510.16x = 169,618.86
  5. Step 5: Solve for x
    x = 169,618.86/510.16
  6. Step 6: Final answer
    x = 332.48

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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.