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Finding the Fourth Proportional to 479.40, 665.52 and 450.24

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Solution

The fourth proportional to 479.40, 665.52 and 450.24 is: 625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.40 : 665.52 = 450.24 : x
  2. Step 2: Convert to fraction form
    479.40/665.52 = 450.24/x
  3. Step 3: Cross multiply
    479.40x = 665.52 × 450.24
  4. Step 4: Simplify right side
    479.40x = 299,643.72
  5. Step 5: Solve for x
    x = 299,643.72/479.40
  6. Step 6: Final answer
    x = 625.04

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.