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Finding the Fourth Proportional to 642.12, 886.13 and 362.37

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Solution

The fourth proportional to 642.12, 886.13 and 362.37 is: 500.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    642.12 : 886.13 = 362.37 : x
  2. Step 2: Convert to fraction form
    642.12/886.13 = 362.37/x
  3. Step 3: Cross multiply
    642.12x = 886.13 × 362.37
  4. Step 4: Simplify right side
    642.12x = 321,103.15
  5. Step 5: Solve for x
    x = 321,103.15/642.12
  6. Step 6: Final answer
    x = 500.07

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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.