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Finding the Fourth Proportional to 354.94, 532.48 and 111.49

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Solution

The fourth proportional to 354.94, 532.48 and 111.49 is: 167.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.94 : 532.48 = 111.49 : x
  2. Step 2: Convert to fraction form
    354.94/532.48 = 111.49/x
  3. Step 3: Cross multiply
    354.94x = 532.48 × 111.49
  4. Step 4: Simplify right side
    354.94x = 59,366.20
  5. Step 5: Solve for x
    x = 59,366.20/354.94
  6. Step 6: Final answer
    x = 167.26

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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.