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Finding the Fourth Proportional to 470.90, 706.46 and 197.06

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Solution

The fourth proportional to 470.90, 706.46 and 197.06 is: 295.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.90 : 706.46 = 197.06 : x
  2. Step 2: Convert to fraction form
    470.90/706.46 = 197.06/x
  3. Step 3: Cross multiply
    470.90x = 706.46 × 197.06
  4. Step 4: Simplify right side
    470.90x = 139,210.49
  5. Step 5: Solve for x
    x = 139,210.49/470.90
  6. Step 6: Final answer
    x = 295.62

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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.