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Finding the Fourth Proportional to 660.25, 987.13 and 627.04

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Solution

The fourth proportional to 660.25, 987.13 and 627.04 is: 937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.25 : 987.13 = 627.04 : x
  2. Step 2: Convert to fraction form
    660.25/987.13 = 627.04/x
  3. Step 3: Cross multiply
    660.25x = 987.13 × 627.04
  4. Step 4: Simplify right side
    660.25x = 618,970.00
  5. Step 5: Solve for x
    x = 618,970.00/660.25
  6. Step 6: Final answer
    x = 937.48

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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.