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Finding the Fourth Proportional to 777.49, 1,166.62 and 484.92

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Solution

The fourth proportional to 777.49, 1,166.62 and 484.92 is: 727.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    777.49 : 1,166.62 = 484.92 : x
  2. Step 2: Convert to fraction form
    777.49/1,166.62 = 484.92/x
  3. Step 3: Cross multiply
    777.49x = 1,166.62 × 484.92
  4. Step 4: Simplify right side
    777.49x = 565,717.37
  5. Step 5: Solve for x
    x = 565,717.37/777.49
  6. Step 6: Final answer
    x = 727.62

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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.