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Finding the Fourth Proportional to 511.07, 765.58 and 236.79

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Solution

The fourth proportional to 511.07, 765.58 and 236.79 is: 354.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.07 : 765.58 = 236.79 : x
  2. Step 2: Convert to fraction form
    511.07/765.58 = 236.79/x
  3. Step 3: Cross multiply
    511.07x = 765.58 × 236.79
  4. Step 4: Simplify right side
    511.07x = 181,281.69
  5. Step 5: Solve for x
    x = 181,281.69/511.07
  6. Step 6: Final answer
    x = 354.71

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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.