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Finding the Fourth Proportional to 368.05, 548.38 and 347.09

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Solution

The fourth proportional to 368.05, 548.38 and 347.09 is: 517.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.05 : 548.38 = 347.09 : x
  2. Step 2: Convert to fraction form
    368.05/548.38 = 347.09/x
  3. Step 3: Cross multiply
    368.05x = 548.38 × 347.09
  4. Step 4: Simplify right side
    368.05x = 190,337.21
  5. Step 5: Solve for x
    x = 190,337.21/368.05
  6. Step 6: Final answer
    x = 517.15

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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.