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Finding the Fourth Proportional to 764.52, 1,055.36 and 516.17

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Solution

The fourth proportional to 764.52, 1,055.36 and 516.17 is: 712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.52 : 1,055.36 = 516.17 : x
  2. Step 2: Convert to fraction form
    764.52/1,055.36 = 516.17/x
  3. Step 3: Cross multiply
    764.52x = 1,055.36 × 516.17
  4. Step 4: Simplify right side
    764.52x = 544,746.86
  5. Step 5: Solve for x
    x = 544,746.86/764.52
  6. Step 6: Final answer
    x = 712.54

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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.