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Finding the Fourth Proportional to 386.19, 530.95 and 327.63

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Solution

The fourth proportional to 386.19, 530.95 and 327.63 is: 450.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.19 : 530.95 = 327.63 : x
  2. Step 2: Convert to fraction form
    386.19/530.95 = 327.63/x
  3. Step 3: Cross multiply
    386.19x = 530.95 × 327.63
  4. Step 4: Simplify right side
    386.19x = 173,954.33
  5. Step 5: Solve for x
    x = 173,954.33/386.19
  6. Step 6: Final answer
    x = 450.44

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.