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Finding the Fourth Proportional to 649.08, 973.08 and 505.44

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Solution

The fourth proportional to 649.08, 973.08 and 505.44 is: 757.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.08 : 973.08 = 505.44 : x
  2. Step 2: Convert to fraction form
    649.08/973.08 = 505.44/x
  3. Step 3: Cross multiply
    649.08x = 973.08 × 505.44
  4. Step 4: Simplify right side
    649.08x = 491,833.56
  5. Step 5: Solve for x
    x = 491,833.56/649.08
  6. Step 6: Final answer
    x = 757.74

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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.