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Finding the Fourth Proportional to 495.75, 743.75 and 153.75

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Solution

The fourth proportional to 495.75, 743.75 and 153.75 is: 230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.75 : 743.75 = 153.75 : x
  2. Step 2: Convert to fraction form
    495.75/743.75 = 153.75/x
  3. Step 3: Cross multiply
    495.75x = 743.75 × 153.75
  4. Step 4: Simplify right side
    495.75x = 114,350.79
  5. Step 5: Solve for x
    x = 114,350.79/495.75
  6. Step 6: Final answer
    x = 230.66

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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.