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Finding the Fourth Proportional to 511.84, 767.86 and 178.32

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Solution

The fourth proportional to 511.84, 767.86 and 178.32 is: 267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.84 : 767.86 = 178.32 : x
  2. Step 2: Convert to fraction form
    511.84/767.86 = 178.32/x
  3. Step 3: Cross multiply
    511.84x = 767.86 × 178.32
  4. Step 4: Simplify right side
    511.84x = 136,924.80
  5. Step 5: Solve for x
    x = 136,924.80/511.84
  6. Step 6: Final answer
    x = 267.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.