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Finding the Fourth Proportional to 445.26, 610.53 and 403.68

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Solution

The fourth proportional to 445.26, 610.53 and 403.68 is: 553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.26 : 610.53 = 403.68 : x
  2. Step 2: Convert to fraction form
    445.26/610.53 = 403.68/x
  3. Step 3: Cross multiply
    445.26x = 610.53 × 403.68
  4. Step 4: Simplify right side
    445.26x = 246,458.75
  5. Step 5: Solve for x
    x = 246,458.75/445.26
  6. Step 6: Final answer
    x = 553.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.