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Finding the Fourth Proportional to 674.92, 930.54 and 550.45

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Solution

The fourth proportional to 674.92, 930.54 and 550.45 is: 758.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.92 : 930.54 = 550.45 : x
  2. Step 2: Convert to fraction form
    674.92/930.54 = 550.45/x
  3. Step 3: Cross multiply
    674.92x = 930.54 × 550.45
  4. Step 4: Simplify right side
    674.92x = 512,215.74
  5. Step 5: Solve for x
    x = 512,215.74/674.92
  6. Step 6: Final answer
    x = 758.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.