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Finding the Fourth Proportional to 418.66, 626.91 and 336.01

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Solution

The fourth proportional to 418.66, 626.91 and 336.01 is: 503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.66 : 626.91 = 336.01 : x
  2. Step 2: Convert to fraction form
    418.66/626.91 = 336.01/x
  3. Step 3: Cross multiply
    418.66x = 626.91 × 336.01
  4. Step 4: Simplify right side
    418.66x = 210,648.03
  5. Step 5: Solve for x
    x = 210,648.03/418.66
  6. Step 6: Final answer
    x = 503.15

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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.