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Finding the Fourth Proportional to 355.67, 532.73 and 172.50

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Solution

The fourth proportional to 355.67, 532.73 and 172.50 is: 258.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.67 : 532.73 = 172.50 : x
  2. Step 2: Convert to fraction form
    355.67/532.73 = 172.50/x
  3. Step 3: Cross multiply
    355.67x = 532.73 × 172.50
  4. Step 4: Simplify right side
    355.67x = 91,895.93
  5. Step 5: Solve for x
    x = 91,895.93/355.67
  6. Step 6: Final answer
    x = 258.37

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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.