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Finding the Fourth Proportional to 440.69, 607.04 and 418.82

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Solution

The fourth proportional to 440.69, 607.04 and 418.82 is: 576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.69 : 607.04 = 418.82 : x
  2. Step 2: Convert to fraction form
    440.69/607.04 = 418.82/x
  3. Step 3: Cross multiply
    440.69x = 607.04 × 418.82
  4. Step 4: Simplify right side
    440.69x = 254,236.88
  5. Step 5: Solve for x
    x = 254,236.88/440.69
  6. Step 6: Final answer
    x = 576.91

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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.