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Finding the Fourth Proportional to 633.60, 950.76 and 345

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Solution

The fourth proportional to 633.60, 950.76 and 345 is: 517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.60 : 950.76 = 345 : x
  2. Step 2: Convert to fraction form
    633.60/950.76 = 345/x
  3. Step 3: Cross multiply
    633.60x = 950.76 × 345
  4. Step 4: Simplify right side
    633.60x = 328,012.20
  5. Step 5: Solve for x
    x = 328,012.20/633.60
  6. Step 6: Final answer
    x = 517.70

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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.