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Finding the Fourth Proportional to 495.93, 743.64 and 290.90

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Solution

The fourth proportional to 495.93, 743.64 and 290.90 is: 436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.93 : 743.64 = 290.90 : x
  2. Step 2: Convert to fraction form
    495.93/743.64 = 290.90/x
  3. Step 3: Cross multiply
    495.93x = 743.64 × 290.90
  4. Step 4: Simplify right side
    495.93x = 216,326.74
  5. Step 5: Solve for x
    x = 216,326.74/495.93
  6. Step 6: Final answer
    x = 436.20

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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.