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Finding the Fourth Proportional to 727.70, 1,004.06 and 465.66

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Solution

The fourth proportional to 727.70, 1,004.06 and 465.66 is: 642.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.70 : 1,004.06 = 465.66 : x
  2. Step 2: Convert to fraction form
    727.70/1,004.06 = 465.66/x
  3. Step 3: Cross multiply
    727.70x = 1,004.06 × 465.66
  4. Step 4: Simplify right side
    727.70x = 467,551.74
  5. Step 5: Solve for x
    x = 467,551.74/727.70
  6. Step 6: Final answer
    x = 642.51

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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.