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Finding the Fourth Proportional to 628.58, 938.73 and 536.55

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Solution

The fourth proportional to 628.58, 938.73 and 536.55 is: 801.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.58 : 938.73 = 536.55 : x
  2. Step 2: Convert to fraction form
    628.58/938.73 = 536.55/x
  3. Step 3: Cross multiply
    628.58x = 938.73 × 536.55
  4. Step 4: Simplify right side
    628.58x = 503,675.58
  5. Step 5: Solve for x
    x = 503,675.58/628.58
  6. Step 6: Final answer
    x = 801.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.