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Finding the Fourth Proportional to 496.97, 745.90 and 415.21

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Solution

The fourth proportional to 496.97, 745.90 and 415.21 is: 623.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.97 : 745.90 = 415.21 : x
  2. Step 2: Convert to fraction form
    496.97/745.90 = 415.21/x
  3. Step 3: Cross multiply
    496.97x = 745.90 × 415.21
  4. Step 4: Simplify right side
    496.97x = 309,702.24
  5. Step 5: Solve for x
    x = 309,702.24/496.97
  6. Step 6: Final answer
    x = 623.19

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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.