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Finding the Fourth Proportional to 766.68, 1,150.02 and 622.50

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Solution

The fourth proportional to 766.68, 1,150.02 and 622.50 is: 933.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.68 : 1,150.02 = 622.50 : x
  2. Step 2: Convert to fraction form
    766.68/1,150.02 = 622.50/x
  3. Step 3: Cross multiply
    766.68x = 1,150.02 × 622.50
  4. Step 4: Simplify right side
    766.68x = 715,887.45
  5. Step 5: Solve for x
    x = 715,887.45/766.68
  6. Step 6: Final answer
    x = 933.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.