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Finding the Fourth Proportional to 436.11, 601.65 and 278.79

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Solution

The fourth proportional to 436.11, 601.65 and 278.79 is: 384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.11 : 601.65 = 278.79 : x
  2. Step 2: Convert to fraction form
    436.11/601.65 = 278.79/x
  3. Step 3: Cross multiply
    436.11x = 601.65 × 278.79
  4. Step 4: Simplify right side
    436.11x = 167,734.00
  5. Step 5: Solve for x
    x = 167,734.00/436.11
  6. Step 6: Final answer
    x = 384.61

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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.