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Finding the Fourth Proportional to 601.77, 902.78 and 211.83

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Solution

The fourth proportional to 601.77, 902.78 and 211.83 is: 317.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.77 : 902.78 = 211.83 : x
  2. Step 2: Convert to fraction form
    601.77/902.78 = 211.83/x
  3. Step 3: Cross multiply
    601.77x = 902.78 × 211.83
  4. Step 4: Simplify right side
    601.77x = 191,235.89
  5. Step 5: Solve for x
    x = 191,235.89/601.77
  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.