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Finding the Fourth Proportional to 574.77, 862.15 and 141.93

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Solution

The fourth proportional to 574.77, 862.15 and 141.93 is: 212.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.77 : 862.15 = 141.93 : x
  2. Step 2: Convert to fraction form
    574.77/862.15 = 141.93/x
  3. Step 3: Cross multiply
    574.77x = 862.15 × 141.93
  4. Step 4: Simplify right side
    574.77x = 122,362.84
  5. Step 5: Solve for x
    x = 122,362.84/574.77
  6. Step 6: Final answer
    x = 212.89

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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.