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Finding the Fourth Proportional to 734.24, 1,100.55 and 490.43

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Solution

The fourth proportional to 734.24, 1,100.55 and 490.43 is: 735.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.24 : 1,100.55 = 490.43 : x
  2. Step 2: Convert to fraction form
    734.24/1,100.55 = 490.43/x
  3. Step 3: Cross multiply
    734.24x = 1,100.55 × 490.43
  4. Step 4: Simplify right side
    734.24x = 539,742.74
  5. Step 5: Solve for x
    x = 539,742.74/734.24
  6. Step 6: Final answer
    x = 735.10

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Double scale
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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.