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Finding the Fourth Proportional to 777.49, 1,166.41 and 344.77

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Solution

The fourth proportional to 777.49, 1,166.41 and 344.77 is: 517.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    777.49 : 1,166.41 = 344.77 : x
  2. Step 2: Convert to fraction form
    777.49/1,166.41 = 344.77/x
  3. Step 3: Cross multiply
    777.49x = 1,166.41 × 344.77
  4. Step 4: Simplify right side
    777.49x = 402,143.18
  5. Step 5: Solve for x
    x = 402,143.18/777.49
  6. Step 6: Final answer
    x = 517.23

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Double scale
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1.5x scale

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.