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Finding the Fourth Proportional to 340.97, 510.62 and 254.21

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Solution

The fourth proportional to 340.97, 510.62 and 254.21 is: 380.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.97 : 510.62 = 254.21 : x
  2. Step 2: Convert to fraction form
    340.97/510.62 = 254.21/x
  3. Step 3: Cross multiply
    340.97x = 510.62 × 254.21
  4. Step 4: Simplify right side
    340.97x = 129,804.71
  5. Step 5: Solve for x
    x = 129,804.71/340.97
  6. Step 6: Final answer
    x = 380.69

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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.