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Finding the Fourth Proportional to 495.63, 743.40 and 130.46

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Solution

The fourth proportional to 495.63, 743.40 and 130.46 is: 195.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.63 : 743.40 = 130.46 : x
  2. Step 2: Convert to fraction form
    495.63/743.40 = 130.46/x
  3. Step 3: Cross multiply
    495.63x = 743.40 × 130.46
  4. Step 4: Simplify right side
    495.63x = 96,980.25
  5. Step 5: Solve for x
    x = 96,980.25/495.63
  6. Step 6: Final answer
    x = 195.67

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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.