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Finding the Fourth Proportional to 374.94, 560.97 and 212.76

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Solution

The fourth proportional to 374.94, 560.97 and 212.76 is: 318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.94 : 560.97 = 212.76 : x
  2. Step 2: Convert to fraction form
    374.94/560.97 = 212.76/x
  3. Step 3: Cross multiply
    374.94x = 560.97 × 212.76
  4. Step 4: Simplify right side
    374.94x = 119,351.98
  5. Step 5: Solve for x
    x = 119,351.98/374.94
  6. Step 6: Final answer
    x = 318.32

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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.