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Finding the Fourth Proportional to 744.55, 1,027.67 and 450.02

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Solution

The fourth proportional to 744.55, 1,027.67 and 450.02 is: 621.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.55 : 1,027.67 = 450.02 : x
  2. Step 2: Convert to fraction form
    744.55/1,027.67 = 450.02/x
  3. Step 3: Cross multiply
    744.55x = 1,027.67 × 450.02
  4. Step 4: Simplify right side
    744.55x = 462,472.05
  5. Step 5: Solve for x
    x = 462,472.05/744.55
  6. Step 6: Final answer
    x = 621.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.