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Finding the Fourth Proportional to 744.77, 1,027.88 and 449.97

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Solution

The fourth proportional to 744.77, 1,027.88 and 449.97 is: 621.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.77 : 1,027.88 = 449.97 : x
  2. Step 2: Convert to fraction form
    744.77/1,027.88 = 449.97/x
  3. Step 3: Cross multiply
    744.77x = 1,027.88 × 449.97
  4. Step 4: Simplify right side
    744.77x = 462,512.91
  5. Step 5: Solve for x
    x = 462,512.91/744.77
  6. Step 6: Final answer
    x = 621.02

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1.5x scale

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.