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Finding the Fourth Proportional to 636.16, 875 and 511.54

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Solution

The fourth proportional to 636.16, 875 and 511.54 is: 703.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.16 : 875 = 511.54 : x
  2. Step 2: Convert to fraction form
    636.16/875 = 511.54/x
  3. Step 3: Cross multiply
    636.16x = 875 × 511.54
  4. Step 4: Simplify right side
    636.16x = 447,597.50
  5. Step 5: Solve for x
    x = 447,597.50/636.16
  6. Step 6: Final answer
    x = 703.59

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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.