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Finding the Fourth Proportional to 648.55, 968.03 and 636.49

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Solution

The fourth proportional to 648.55, 968.03 and 636.49 is: 950.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.55 : 968.03 = 636.49 : x
  2. Step 2: Convert to fraction form
    648.55/968.03 = 636.49/x
  3. Step 3: Cross multiply
    648.55x = 968.03 × 636.49
  4. Step 4: Simplify right side
    648.55x = 616,141.41
  5. Step 5: Solve for x
    x = 616,141.41/648.55
  6. Step 6: Final answer
    x = 950.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.