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Finding the Fourth Proportional to 445.36, 670.63 and 330.62

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Solution

The fourth proportional to 445.36, 670.63 and 330.62 is: 497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.36 : 670.63 = 330.62 : x
  2. Step 2: Convert to fraction form
    445.36/670.63 = 330.62/x
  3. Step 3: Cross multiply
    445.36x = 670.63 × 330.62
  4. Step 4: Simplify right side
    445.36x = 221,723.69
  5. Step 5: Solve for x
    x = 221,723.69/445.36
  6. Step 6: Final answer
    x = 497.85

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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.