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Finding the Fourth Proportional to 356.31, 533.64 and 344.16

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Solution

The fourth proportional to 356.31, 533.64 and 344.16 is: 515.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.31 : 533.64 = 344.16 : x
  2. Step 2: Convert to fraction form
    356.31/533.64 = 344.16/x
  3. Step 3: Cross multiply
    356.31x = 533.64 × 344.16
  4. Step 4: Simplify right side
    356.31x = 183,657.54
  5. Step 5: Solve for x
    x = 183,657.54/356.31
  6. Step 6: Final answer
    x = 515.44

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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.