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Finding the Fourth Proportional to 628.56, 941.76 and 506.88

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Solution

The fourth proportional to 628.56, 941.76 and 506.88 is: 759.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.56 : 941.76 = 506.88 : x
  2. Step 2: Convert to fraction form
    628.56/941.76 = 506.88/x
  3. Step 3: Cross multiply
    628.56x = 941.76 × 506.88
  4. Step 4: Simplify right side
    628.56x = 477,359.31
  5. Step 5: Solve for x
    x = 477,359.31/628.56
  6. Step 6: Final answer
    x = 759.45

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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.