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Finding the Fourth Proportional to 470.91, 706.44 and 146.25

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Solution

The fourth proportional to 470.91, 706.44 and 146.25 is: 219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.91 : 706.44 = 146.25 : x
  2. Step 2: Convert to fraction form
    470.91/706.44 = 146.25/x
  3. Step 3: Cross multiply
    470.91x = 706.44 × 146.25
  4. Step 4: Simplify right side
    470.91x = 103,316.85
  5. Step 5: Solve for x
    x = 103,316.85/470.91
  6. Step 6: Final answer
    x = 219.40

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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.