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Finding the Fourth Proportional to 356.44, 531.16 and 344.84

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Solution

The fourth proportional to 356.44, 531.16 and 344.84 is: 513.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.44 : 531.16 = 344.84 : x
  2. Step 2: Convert to fraction form
    356.44/531.16 = 344.84/x
  3. Step 3: Cross multiply
    356.44x = 531.16 × 344.84
  4. Step 4: Simplify right side
    356.44x = 183,165.21
  5. Step 5: Solve for x
    x = 183,165.21/356.44
  6. Step 6: Final answer
    x = 513.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.