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Finding the Fourth Proportional to 361, 498 and 262.90

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Solution

The fourth proportional to 361, 498 and 262.90 is: 362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    361 : 498 = 262.90 : x
  2. Step 2: Convert to fraction form
    361/498 = 262.90/x
  3. Step 3: Cross multiply
    361x = 498 × 262.90
  4. Step 4: Simplify right side
    361x = 130,924.20
  5. Step 5: Solve for x
    x = 130,924.20/361
  6. Step 6: Final answer
    x = 362.67

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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.