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Finding the Fourth Proportional to 360.42, 497.86 and 290.75

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Solution

The fourth proportional to 360.42, 497.86 and 290.75 is: 401.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.42 : 497.86 = 290.75 : x
  2. Step 2: Convert to fraction form
    360.42/497.86 = 290.75/x
  3. Step 3: Cross multiply
    360.42x = 497.86 × 290.75
  4. Step 4: Simplify right side
    360.42x = 144,752.80
  5. Step 5: Solve for x
    x = 144,752.80/360.42
  6. Step 6: Final answer
    x = 401.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.