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Finding the Fourth Proportional to 567.71, 851.11 and 522.15

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Solution

The fourth proportional to 567.71, 851.11 and 522.15 is: 782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.71 : 851.11 = 522.15 : x
  2. Step 2: Convert to fraction form
    567.71/851.11 = 522.15/x
  3. Step 3: Cross multiply
    567.71x = 851.11 × 522.15
  4. Step 4: Simplify right side
    567.71x = 444,400.22
  5. Step 5: Solve for x
    x = 444,400.22/567.71
  6. Step 6: Final answer
    x = 782.80

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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.