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Finding the Fourth Proportional to 479.02, 717.84 and 205.36

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Solution

The fourth proportional to 479.02, 717.84 and 205.36 is: 307.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.02 : 717.84 = 205.36 : x
  2. Step 2: Convert to fraction form
    479.02/717.84 = 205.36/x
  3. Step 3: Cross multiply
    479.02x = 717.84 × 205.36
  4. Step 4: Simplify right side
    479.02x = 147,415.62
  5. Step 5: Solve for x
    x = 147,415.62/479.02
  6. Step 6: Final answer
    x = 307.74

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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.