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Finding the Fourth Proportional to 638.15, 955.87 and 364.10

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Solution

The fourth proportional to 638.15, 955.87 and 364.10 is: 545.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.15 : 955.87 = 364.10 : x
  2. Step 2: Convert to fraction form
    638.15/955.87 = 364.10/x
  3. Step 3: Cross multiply
    638.15x = 955.87 × 364.10
  4. Step 4: Simplify right side
    638.15x = 348,026.58
  5. Step 5: Solve for x
    x = 348,026.58/638.15
  6. Step 6: Final answer
    x = 545.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.