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Finding the Fourth Proportional to 479.88, 719.82 and 445.32

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Solution

The fourth proportional to 479.88, 719.82 and 445.32 is: 667.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.88 : 719.82 = 445.32 : x
  2. Step 2: Convert to fraction form
    479.88/719.82 = 445.32/x
  3. Step 3: Cross multiply
    479.88x = 719.82 × 445.32
  4. Step 4: Simplify right side
    479.88x = 320,550.24
  5. Step 5: Solve for x
    x = 320,550.24/479.88
  6. Step 6: Final answer
    x = 667.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.