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Finding the Fourth Proportional to 447.02, 670.51 and 186.91

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Solution

The fourth proportional to 447.02, 670.51 and 186.91 is: 280.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.02 : 670.51 = 186.91 : x
  2. Step 2: Convert to fraction form
    447.02/670.51 = 186.91/x
  3. Step 3: Cross multiply
    447.02x = 670.51 × 186.91
  4. Step 4: Simplify right side
    447.02x = 125,325.02
  5. Step 5: Solve for x
    x = 125,325.02/447.02
  6. Step 6: Final answer
    x = 280.36

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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.