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Finding the Fourth Proportional to 386.02, 581.12 and 352.54

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Solution

The fourth proportional to 386.02, 581.12 and 352.54 is: 530.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.02 : 581.12 = 352.54 : x
  2. Step 2: Convert to fraction form
    386.02/581.12 = 352.54/x
  3. Step 3: Cross multiply
    386.02x = 581.12 × 352.54
  4. Step 4: Simplify right side
    386.02x = 204,866.28
  5. Step 5: Solve for x
    x = 204,866.28/386.02
  6. Step 6: Final answer
    x = 530.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.