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Finding the Fourth Proportional to 336.80, 505.48 and 154.16

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Solution

The fourth proportional to 336.80, 505.48 and 154.16 is: 231.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.80 : 505.48 = 154.16 : x
  2. Step 2: Convert to fraction form
    336.80/505.48 = 154.16/x
  3. Step 3: Cross multiply
    336.80x = 505.48 × 154.16
  4. Step 4: Simplify right side
    336.80x = 77,924.80
  5. Step 5: Solve for x
    x = 77,924.80/336.80
  6. Step 6: Final answer
    x = 231.37

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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.