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Finding the Fourth Proportional to 470.43, 648.32 and 377.48

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Solution

The fourth proportional to 470.43, 648.32 and 377.48 is: 520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.43 : 648.32 = 377.48 : x
  2. Step 2: Convert to fraction form
    470.43/648.32 = 377.48/x
  3. Step 3: Cross multiply
    470.43x = 648.32 × 377.48
  4. Step 4: Simplify right side
    470.43x = 244,722.70
  5. Step 5: Solve for x
    x = 244,722.70/470.43
  6. Step 6: Final answer
    x = 520.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.