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Finding the Fourth Proportional to 479.93, 666.77 and 474.17

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Solution

The fourth proportional to 479.93, 666.77 and 474.17 is: 658.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.93 : 666.77 = 474.17 : x
  2. Step 2: Convert to fraction form
    479.93/666.77 = 474.17/x
  3. Step 3: Cross multiply
    479.93x = 666.77 × 474.17
  4. Step 4: Simplify right side
    479.93x = 316,162.33
  5. Step 5: Solve for x
    x = 316,162.33/479.93
  6. Step 6: Final answer
    x = 658.77

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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.