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Finding the Fourth Proportional to 556.03, 767.60 and 359.70

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Solution

The fourth proportional to 556.03, 767.60 and 359.70 is: 496.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.03 : 767.60 = 359.70 : x
  2. Step 2: Convert to fraction form
    556.03/767.60 = 359.70/x
  3. Step 3: Cross multiply
    556.03x = 767.60 × 359.70
  4. Step 4: Simplify right side
    556.03x = 276,105.72
  5. Step 5: Solve for x
    x = 276,105.72/556.03
  6. Step 6: Final answer
    x = 496.57

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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.