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Finding the Fourth Proportional to 368.96, 509.38 and 344.48

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Solution

The fourth proportional to 368.96, 509.38 and 344.48 is: 475.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.96 : 509.38 = 344.48 : x
  2. Step 2: Convert to fraction form
    368.96/509.38 = 344.48/x
  3. Step 3: Cross multiply
    368.96x = 509.38 × 344.48
  4. Step 4: Simplify right side
    368.96x = 175,467.81
  5. Step 5: Solve for x
    x = 175,467.81/368.96
  6. Step 6: Final answer
    x = 475.58

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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.