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Finding the Fourth Proportional to 633.39, 873.62 and 515.36

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Solution

The fourth proportional to 633.39, 873.62 and 515.36 is: 710.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.39 : 873.62 = 515.36 : x
  2. Step 2: Convert to fraction form
    633.39/873.62 = 515.36/x
  3. Step 3: Cross multiply
    633.39x = 873.62 × 515.36
  4. Step 4: Simplify right side
    633.39x = 450,230.34
  5. Step 5: Solve for x
    x = 450,230.34/633.39
  6. Step 6: Final answer
    x = 710.83

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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.