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Finding the Fourth Proportional to 555.75, 767.28 and 359.63

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Solution

The fourth proportional to 555.75, 767.28 and 359.63 is: 496.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.75 : 767.28 = 359.63 : x
  2. Step 2: Convert to fraction form
    555.75/767.28 = 359.63/x
  3. Step 3: Cross multiply
    555.75x = 767.28 × 359.63
  4. Step 4: Simplify right side
    555.75x = 275,936.91
  5. Step 5: Solve for x
    x = 275,936.91/555.75
  6. Step 6: Final answer
    x = 496.51

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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.