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Finding the Fourth Proportional to 648.93, 968.77 and 626.15

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Solution

The fourth proportional to 648.93, 968.77 and 626.15 is: 934.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.93 : 968.77 = 626.15 : x
  2. Step 2: Convert to fraction form
    648.93/968.77 = 626.15/x
  3. Step 3: Cross multiply
    648.93x = 968.77 × 626.15
  4. Step 4: Simplify right side
    648.93x = 606,588.93
  5. Step 5: Solve for x
    x = 606,588.93/648.93
  6. Step 6: Final answer
    x = 934.76

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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.