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Finding the Fourth Proportional to 649.67, 969.93 and 636.93

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Solution

The fourth proportional to 649.67, 969.93 and 636.93 is: 950.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.67 : 969.93 = 636.93 : x
  2. Step 2: Convert to fraction form
    649.67/969.93 = 636.93/x
  3. Step 3: Cross multiply
    649.67x = 969.93 × 636.93
  4. Step 4: Simplify right side
    649.67x = 617,777.51
  5. Step 5: Solve for x
    x = 617,777.51/649.67
  6. Step 6: Final answer
    x = 950.92

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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.