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Finding the Fourth Proportional to 355.84, 491.18 and 268.52

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Solution

The fourth proportional to 355.84, 491.18 and 268.52 is: 370.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.84 : 491.18 = 268.52 : x
  2. Step 2: Convert to fraction form
    355.84/491.18 = 268.52/x
  3. Step 3: Cross multiply
    355.84x = 491.18 × 268.52
  4. Step 4: Simplify right side
    355.84x = 131,891.65
  5. Step 5: Solve for x
    x = 131,891.65/355.84
  6. Step 6: Final answer
    x = 370.65

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