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Finding the Fourth Proportional to 673.34, 1,008.46 and 490.28

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Solution

The fourth proportional to 673.34, 1,008.46 and 490.28 is: 734.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.34 : 1,008.46 = 490.28 : x
  2. Step 2: Convert to fraction form
    673.34/1,008.46 = 490.28/x
  3. Step 3: Cross multiply
    673.34x = 1,008.46 × 490.28
  4. Step 4: Simplify right side
    673.34x = 494,427.77
  5. Step 5: Solve for x
    x = 494,427.77/673.34
  6. Step 6: Final answer
    x = 734.29

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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.