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Finding the Fourth Proportional to 245.82, 339.25 and 172.16

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Solution

The fourth proportional to 245.82, 339.25 and 172.16 is: 237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.82 : 339.25 = 172.16 : x
  2. Step 2: Convert to fraction form
    245.82/339.25 = 172.16/x
  3. Step 3: Cross multiply
    245.82x = 339.25 × 172.16
  4. Step 4: Simplify right side
    245.82x = 58,406.42
  5. Step 5: Solve for x
    x = 58,406.42/245.82
  6. Step 6: Final answer
    x = 237.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.