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Finding the Fourth Proportional to 250.45, 374.43 and 212.35

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Solution

The fourth proportional to 250.45, 374.43 and 212.35 is: 317.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.45 : 374.43 = 212.35 : x
  2. Step 2: Convert to fraction form
    250.45/374.43 = 212.35/x
  3. Step 3: Cross multiply
    250.45x = 374.43 × 212.35
  4. Step 4: Simplify right side
    250.45x = 79,510.21
  5. Step 5: Solve for x
    x = 79,510.21/250.45
  6. Step 6: Final answer
    x = 317.47

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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.