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Finding the Fourth Proportional to 436.05, 601.79 and 261.39

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Solution

The fourth proportional to 436.05, 601.79 and 261.39 is: 360.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.05 : 601.79 = 261.39 : x
  2. Step 2: Convert to fraction form
    436.05/601.79 = 261.39/x
  3. Step 3: Cross multiply
    436.05x = 601.79 × 261.39
  4. Step 4: Simplify right side
    436.05x = 157,300.58
  5. Step 5: Solve for x
    x = 157,300.58/436.05
  6. Step 6: Final answer
    x = 360.74

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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.