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Finding the Fourth Proportional to 648.80, 968.58 and 626.02

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Solution

The fourth proportional to 648.80, 968.58 and 626.02 is: 934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.80 : 968.58 = 626.02 : x
  2. Step 2: Convert to fraction form
    648.80/968.58 = 626.02/x
  3. Step 3: Cross multiply
    648.80x = 968.58 × 626.02
  4. Step 4: Simplify right side
    648.80x = 606,352.02
  5. Step 5: Solve for x
    x = 606,352.02/648.80
  6. Step 6: Final answer
    x = 934.57

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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.