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Finding the Fourth Proportional to 495.12, 742.84 and 452.24

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Solution

The fourth proportional to 495.12, 742.84 and 452.24 is: 678.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.12 : 742.84 = 452.24 : x
  2. Step 2: Convert to fraction form
    495.12/742.84 = 452.24/x
  3. Step 3: Cross multiply
    495.12x = 742.84 × 452.24
  4. Step 4: Simplify right side
    495.12x = 335,941.96
  5. Step 5: Solve for x
    x = 335,941.96/495.12
  6. Step 6: Final answer
    x = 678.51

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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.