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Finding the Fourth Proportional to 660.54, 991.54 and 452.46

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Solution

The fourth proportional to 660.54, 991.54 and 452.46 is: 679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.54 : 991.54 = 452.46 : x
  2. Step 2: Convert to fraction form
    660.54/991.54 = 452.46/x
  3. Step 3: Cross multiply
    660.54x = 991.54 × 452.46
  4. Step 4: Simplify right side
    660.54x = 448,632.19
  5. Step 5: Solve for x
    x = 448,632.19/660.54
  6. Step 6: Final answer
    x = 679.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.