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Finding the Fourth Proportional to 364.85, 548.36 and 172.61

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Solution

The fourth proportional to 364.85, 548.36 and 172.61 is: 259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.85 : 548.36 = 172.61 : x
  2. Step 2: Convert to fraction form
    364.85/548.36 = 172.61/x
  3. Step 3: Cross multiply
    364.85x = 548.36 × 172.61
  4. Step 4: Simplify right side
    364.85x = 94,648.81
  5. Step 5: Solve for x
    x = 94,648.81/364.85
  6. Step 6: Final answer
    x = 259.42

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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.