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Finding the Fourth Proportional to 556.10, 767.42 and 335.05

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Solution

The fourth proportional to 556.10, 767.42 and 335.05 is: 462.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.10 : 767.42 = 335.05 : x
  2. Step 2: Convert to fraction form
    556.10/767.42 = 335.05/x
  3. Step 3: Cross multiply
    556.10x = 767.42 × 335.05
  4. Step 4: Simplify right side
    556.10x = 257,124.07
  5. Step 5: Solve for x
    x = 257,124.07/556.10
  6. Step 6: Final answer
    x = 462.37

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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.