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Finding the Fourth Proportional to 511.14, 767.25 and 319.17

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Solution

The fourth proportional to 511.14, 767.25 and 319.17 is: 479.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.14 : 767.25 = 319.17 : x
  2. Step 2: Convert to fraction form
    511.14/767.25 = 319.17/x
  3. Step 3: Cross multiply
    511.14x = 767.25 × 319.17
  4. Step 4: Simplify right side
    511.14x = 244,883.18
  5. Step 5: Solve for x
    x = 244,883.18/511.14
  6. Step 6: Final answer
    x = 479.09

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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.