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Finding the Fourth Proportional to 648.37, 894.28 and 626.95

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Solution

The fourth proportional to 648.37, 894.28 and 626.95 is: 864.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.37 : 894.28 = 626.95 : x
  2. Step 2: Convert to fraction form
    648.37/894.28 = 626.95/x
  3. Step 3: Cross multiply
    648.37x = 894.28 × 626.95
  4. Step 4: Simplify right side
    648.37x = 560,661.24
  5. Step 5: Solve for x
    x = 560,661.24/648.37
  6. Step 6: Final answer
    x = 864.73

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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.