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Finding the Fourth Proportional to 556.61, 767.88 and 335.43

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Solution

The fourth proportional to 556.61, 767.88 and 335.43 is: 462.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.61 : 767.88 = 335.43 : x
  2. Step 2: Convert to fraction form
    556.61/767.88 = 335.43/x
  3. Step 3: Cross multiply
    556.61x = 767.88 × 335.43
  4. Step 4: Simplify right side
    556.61x = 257,569.27
  5. Step 5: Solve for x
    x = 257,569.27/556.61
  6. Step 6: Final answer
    x = 462.75

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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.