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Finding the Fourth Proportional to 479.16, 717.08 and 324.90

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Solution

The fourth proportional to 479.16, 717.08 and 324.90 is: 486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.16 : 717.08 = 324.90 : x
  2. Step 2: Convert to fraction form
    479.16/717.08 = 324.90/x
  3. Step 3: Cross multiply
    479.16x = 717.08 × 324.90
  4. Step 4: Simplify right side
    479.16x = 232,977.67
  5. Step 5: Solve for x
    x = 232,977.67/479.16
  6. Step 6: Final answer
    x = 486.22

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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.