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Finding the Fourth Proportional to 416.00, 623.96 and 142.05

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Solution

The fourth proportional to 416.00, 623.96 and 142.05 is: 213.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.00 : 623.96 = 142.05 : x
  2. Step 2: Convert to fraction form
    416.00/623.96 = 142.05/x
  3. Step 3: Cross multiply
    416.00x = 623.96 × 142.05
  4. Step 4: Simplify right side
    416.00x = 88,632.81
  5. Step 5: Solve for x
    x = 88,632.81/416.00
  6. Step 6: Final answer
    x = 213.06

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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.