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Finding the Fourth Proportional to 567.56, 850.18 and 520.31

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Solution

The fourth proportional to 567.56, 850.18 and 520.31 is: 779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.56 : 850.18 = 520.31 : x
  2. Step 2: Convert to fraction form
    567.56/850.18 = 520.31/x
  3. Step 3: Cross multiply
    567.56x = 850.18 × 520.31
  4. Step 4: Simplify right side
    567.56x = 442,352.90
  5. Step 5: Solve for x
    x = 442,352.90/567.56
  6. Step 6: Final answer
    x = 779.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.