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Finding the Fourth Proportional to 479.92, 666.88 and 473.80

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Solution

The fourth proportional to 479.92, 666.88 and 473.80 is: 658.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.92 : 666.88 = 473.80 : x
  2. Step 2: Convert to fraction form
    479.92/666.88 = 473.80/x
  3. Step 3: Cross multiply
    479.92x = 666.88 × 473.80
  4. Step 4: Simplify right side
    479.92x = 315,967.74
  5. Step 5: Solve for x
    x = 315,967.74/479.92
  6. Step 6: Final answer
    x = 658.38

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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.