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Finding the Fourth Proportional to 636.15, 877.23 and 511.44

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Solution

The fourth proportional to 636.15, 877.23 and 511.44 is: 705.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.15 : 877.23 = 511.44 : x
  2. Step 2: Convert to fraction form
    636.15/877.23 = 511.44/x
  3. Step 3: Cross multiply
    636.15x = 877.23 × 511.44
  4. Step 4: Simplify right side
    636.15x = 448,650.51
  5. Step 5: Solve for x
    x = 448,650.51/636.15
  6. Step 6: Final answer
    x = 705.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.