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Finding the Fourth Proportional to 777.75, 1,166.63 and 264.75

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Solution

The fourth proportional to 777.75, 1,166.63 and 264.75 is: 397.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    777.75 : 1,166.63 = 264.75 : x
  2. Step 2: Convert to fraction form
    777.75/1,166.63 = 264.75/x
  3. Step 3: Cross multiply
    777.75x = 1,166.63 × 264.75
  4. Step 4: Simplify right side
    777.75x = 308,863.97
  5. Step 5: Solve for x
    x = 308,863.97/777.75
  6. Step 6: Final answer
    x = 397.13

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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.