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Finding the Fourth Proportional to 470.96, 706.53 and 146.31

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Solution

The fourth proportional to 470.96, 706.53 and 146.31 is: 219.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.96 : 706.53 = 146.31 : x
  2. Step 2: Convert to fraction form
    470.96/706.53 = 146.31/x
  3. Step 3: Cross multiply
    470.96x = 706.53 × 146.31
  4. Step 4: Simplify right side
    470.96x = 103,372.40
  5. Step 5: Solve for x
    x = 103,372.40/470.96
  6. Step 6: Final answer
    x = 219.49

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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.