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Finding the Fourth Proportional to 495.95, 743.68 and 290.57

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Solution

The fourth proportional to 495.95, 743.68 and 290.57 is: 435.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.95 : 743.68 = 290.57 : x
  2. Step 2: Convert to fraction form
    495.95/743.68 = 290.57/x
  3. Step 3: Cross multiply
    495.95x = 743.68 × 290.57
  4. Step 4: Simplify right side
    495.95x = 216,087.74
  5. Step 5: Solve for x
    x = 216,087.74/495.95
  6. Step 6: Final answer
    x = 435.71

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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.