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Finding the Fourth Proportional to 245.17, 365.97 and 240.31

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Solution

The fourth proportional to 245.17, 365.97 and 240.31 is: 358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.17 : 365.97 = 240.31 : x
  2. Step 2: Convert to fraction form
    245.17/365.97 = 240.31/x
  3. Step 3: Cross multiply
    245.17x = 365.97 × 240.31
  4. Step 4: Simplify right side
    245.17x = 87,946.25
  5. Step 5: Solve for x
    x = 87,946.25/245.17
  6. Step 6: Final answer
    x = 358.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.