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Finding the Fourth Proportional to 472.75, 708.93 and 160.31

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Solution

The fourth proportional to 472.75, 708.93 and 160.31 is: 240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.75 : 708.93 = 160.31 : x
  2. Step 2: Convert to fraction form
    472.75/708.93 = 160.31/x
  3. Step 3: Cross multiply
    472.75x = 708.93 × 160.31
  4. Step 4: Simplify right side
    472.75x = 113,648.97
  5. Step 5: Solve for x
    x = 113,648.97/472.75
  6. Step 6: Final answer
    x = 240.40

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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.