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Finding the Fourth Proportional to 727.56, 1,004.10 and 412.86

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Solution

The fourth proportional to 727.56, 1,004.10 and 412.86 is: 569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.56 : 1,004.10 = 412.86 : x
  2. Step 2: Convert to fraction form
    727.56/1,004.10 = 412.86/x
  3. Step 3: Cross multiply
    727.56x = 1,004.10 × 412.86
  4. Step 4: Simplify right side
    727.56x = 414,552.73
  5. Step 5: Solve for x
    x = 414,552.73/727.56
  6. Step 6: Final answer
    x = 569.78

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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.