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Finding the Fourth Proportional to 470.99, 706.21 and 197.28

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Solution

The fourth proportional to 470.99, 706.21 and 197.28 is: 295.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.99 : 706.21 = 197.28 : x
  2. Step 2: Convert to fraction form
    470.99/706.21 = 197.28/x
  3. Step 3: Cross multiply
    470.99x = 706.21 × 197.28
  4. Step 4: Simplify right side
    470.99x = 139,320.62
  5. Step 5: Solve for x
    x = 139,320.62/470.99
  6. Step 6: Final answer
    x = 295.80

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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.