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Finding the Fourth Proportional to 441.66, 665.63 and 437.88

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Solution

The fourth proportional to 441.66, 665.63 and 437.88 is: 659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.66 : 665.63 = 437.88 : x
  2. Step 2: Convert to fraction form
    441.66/665.63 = 437.88/x
  3. Step 3: Cross multiply
    441.66x = 665.63 × 437.88
  4. Step 4: Simplify right side
    441.66x = 291,463.88
  5. Step 5: Solve for x
    x = 291,463.88/441.66
  6. Step 6: Final answer
    x = 659.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.