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Finding the Fourth Proportional to 470.36, 704.09 and 284.77

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Solution

The fourth proportional to 470.36, 704.09 and 284.77 is: 426.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.36 : 704.09 = 284.77 : x
  2. Step 2: Convert to fraction form
    470.36/704.09 = 284.77/x
  3. Step 3: Cross multiply
    470.36x = 704.09 × 284.77
  4. Step 4: Simplify right side
    470.36x = 200,501.34
  5. Step 5: Solve for x
    x = 200,501.34/470.36
  6. Step 6: Final answer
    x = 426.27

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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.