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Finding the Fourth Proportional to 495.68, 743.27 and 290.65

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Solution

The fourth proportional to 495.68, 743.27 and 290.65 is: 435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.68 : 743.27 = 290.65 : x
  2. Step 2: Convert to fraction form
    495.68/743.27 = 290.65/x
  3. Step 3: Cross multiply
    495.68x = 743.27 × 290.65
  4. Step 4: Simplify right side
    495.68x = 216,029.04
  5. Step 5: Solve for x
    x = 216,029.04/495.68
  6. Step 6: Final answer
    x = 435.82

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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.