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Finding the Fourth Proportional to 472.04, 707.93 and 211.89

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Solution

The fourth proportional to 472.04, 707.93 and 211.89 is: 317.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.04 : 707.93 = 211.89 : x
  2. Step 2: Convert to fraction form
    472.04/707.93 = 211.89/x
  3. Step 3: Cross multiply
    472.04x = 707.93 × 211.89
  4. Step 4: Simplify right side
    472.04x = 150,006.87
  5. Step 5: Solve for x
    x = 150,006.87/472.04
  6. Step 6: Final answer
    x = 317.79

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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.