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Finding the Fourth Proportional to 470.80, 704.58 and 397.36

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Solution

The fourth proportional to 470.80, 704.58 and 397.36 is: 594.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.80 : 704.58 = 397.36 : x
  2. Step 2: Convert to fraction form
    470.80/704.58 = 397.36/x
  3. Step 3: Cross multiply
    470.80x = 704.58 × 397.36
  4. Step 4: Simplify right side
    470.80x = 279,971.91
  5. Step 5: Solve for x
    x = 279,971.91/470.80
  6. Step 6: Final answer
    x = 594.67

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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.