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Finding the Fourth Proportional to 262.10, 361.72 and 188.74

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Solution

The fourth proportional to 262.10, 361.72 and 188.74 is: 260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.10 : 361.72 = 188.74 : x
  2. Step 2: Convert to fraction form
    262.10/361.72 = 188.74/x
  3. Step 3: Cross multiply
    262.10x = 361.72 × 188.74
  4. Step 4: Simplify right side
    262.10x = 68,271.03
  5. Step 5: Solve for x
    x = 68,271.03/262.10
  6. Step 6: Final answer
    x = 260.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.