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Finding the Fourth Proportional to 274.94, 412.59 and 130.67

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Solution

The fourth proportional to 274.94, 412.59 and 130.67 is: 196.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.94 : 412.59 = 130.67 : x
  2. Step 2: Convert to fraction form
    274.94/412.59 = 130.67/x
  3. Step 3: Cross multiply
    274.94x = 412.59 × 130.67
  4. Step 4: Simplify right side
    274.94x = 53,913.14
  5. Step 5: Solve for x
    x = 53,913.14/274.94
  6. Step 6: Final answer
    x = 196.09

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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.