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Finding the Fourth Proportional to 764.00, 1,054.57 and 449.26

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Solution

The fourth proportional to 764.00, 1,054.57 and 449.26 is: 620.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.00 : 1,054.57 = 449.26 : x
  2. Step 2: Convert to fraction form
    764.00/1,054.57 = 449.26/x
  3. Step 3: Cross multiply
    764.00x = 1,054.57 × 449.26
  4. Step 4: Simplify right side
    764.00x = 473,773.20
  5. Step 5: Solve for x
    x = 473,773.20/764.00
  6. Step 6: Final answer
    x = 620.12

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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.