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Finding the Fourth Proportional to 628.16, 866.44 and 365.92

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Solution

The fourth proportional to 628.16, 866.44 and 365.92 is: 504.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.16 : 866.44 = 365.92 : x
  2. Step 2: Convert to fraction form
    628.16/866.44 = 365.92/x
  3. Step 3: Cross multiply
    628.16x = 866.44 × 365.92
  4. Step 4: Simplify right side
    628.16x = 317,047.72
  5. Step 5: Solve for x
    x = 317,047.72/628.16
  6. Step 6: Final answer
    x = 504.72

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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.