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Finding the Fourth Proportional to 294.53, 405.19 and 254.90

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Solution

The fourth proportional to 294.53, 405.19 and 254.90 is: 350.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.53 : 405.19 = 254.90 : x
  2. Step 2: Convert to fraction form
    294.53/405.19 = 254.90/x
  3. Step 3: Cross multiply
    294.53x = 405.19 × 254.90
  4. Step 4: Simplify right side
    294.53x = 103,280.27
  5. Step 5: Solve for x
    x = 103,280.27/294.53
  6. Step 6: Final answer
    x = 350.66

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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.