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Finding the Fourth Proportional to 470.12, 704.22 and 277.64

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Solution

The fourth proportional to 470.12, 704.22 and 277.64 is: 415.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.12 : 704.22 = 277.64 : x
  2. Step 2: Convert to fraction form
    470.12/704.22 = 277.64/x
  3. Step 3: Cross multiply
    470.12x = 704.22 × 277.64
  4. Step 4: Simplify right side
    470.12x = 195,519.64
  5. Step 5: Solve for x
    x = 195,519.64/470.12
  6. Step 6: Final answer
    x = 415.89

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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.