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Finding the Fourth Proportional to 354.65, 532.04 and 172.13

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Solution

The fourth proportional to 354.65, 532.04 and 172.13 is: 258.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.65 : 532.04 = 172.13 : x
  2. Step 2: Convert to fraction form
    354.65/532.04 = 172.13/x
  3. Step 3: Cross multiply
    354.65x = 532.04 × 172.13
  4. Step 4: Simplify right side
    354.65x = 91,576.52
  5. Step 5: Solve for x
    x = 91,576.52/354.65
  6. Step 6: Final answer
    x = 258.22

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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.