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Finding the Fourth Proportional to 673.25, 1,008.38 and 490.22

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Solution

The fourth proportional to 673.25, 1,008.38 and 490.22 is: 734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.25 : 1,008.38 = 490.22 : x
  2. Step 2: Convert to fraction form
    673.25/1,008.38 = 490.22/x
  3. Step 3: Cross multiply
    673.25x = 1,008.38 × 490.22
  4. Step 4: Simplify right side
    673.25x = 494,328.01
  5. Step 5: Solve for x
    x = 494,328.01/673.25
  6. Step 6: Final answer
    x = 734.25

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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.