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Finding the Fourth Proportional to 556.43, 767.93 and 359.79

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Solution

The fourth proportional to 556.43, 767.93 and 359.79 is: 496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.43 : 767.93 = 359.79 : x
  2. Step 2: Convert to fraction form
    556.43/767.93 = 359.79/x
  3. Step 3: Cross multiply
    556.43x = 767.93 × 359.79
  4. Step 4: Simplify right side
    556.43x = 276,291.74
  5. Step 5: Solve for x
    x = 276,291.74/556.43
  6. Step 6: Final answer
    x = 496.55

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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.