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Finding the Fourth Proportional to 555.49, 766.83 and 359.10

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Solution

The fourth proportional to 555.49, 766.83 and 359.10 is: 495.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.49 : 766.83 = 359.10 : x
  2. Step 2: Convert to fraction form
    555.49/766.83 = 359.10/x
  3. Step 3: Cross multiply
    555.49x = 766.83 × 359.10
  4. Step 4: Simplify right side
    555.49x = 275,363.02
  5. Step 5: Solve for x
    x = 275,363.02/555.49
  6. Step 6: Final answer
    x = 495.71

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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.