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Finding the Fourth Proportional to 556.55, 767.96 and 335.42

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Solution

The fourth proportional to 556.55, 767.96 and 335.42 is: 462.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.55 : 767.96 = 335.42 : x
  2. Step 2: Convert to fraction form
    556.55/767.96 = 335.42/x
  3. Step 3: Cross multiply
    556.55x = 767.96 × 335.42
  4. Step 4: Simplify right side
    556.55x = 257,584.66
  5. Step 5: Solve for x
    x = 257,584.66/556.55
  6. Step 6: Final answer
    x = 462.83

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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.