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Finding the Fourth Proportional to 495.85, 743.79 and 130.67

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Solution

The fourth proportional to 495.85, 743.79 and 130.67 is: 196.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.85 : 743.79 = 130.67 : x
  2. Step 2: Convert to fraction form
    495.85/743.79 = 130.67/x
  3. Step 3: Cross multiply
    495.85x = 743.79 × 130.67
  4. Step 4: Simplify right side
    495.85x = 97,190.39
  5. Step 5: Solve for x
    x = 97,190.39/495.85
  6. Step 6: Final answer
    x = 196.01

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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.