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Finding the Fourth Proportional to 567.42, 782.43 and 517.74

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Solution

The fourth proportional to 567.42, 782.43 and 517.74 is: 713.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.42 : 782.43 = 517.74 : x
  2. Step 2: Convert to fraction form
    567.42/782.43 = 517.74/x
  3. Step 3: Cross multiply
    567.42x = 782.43 × 517.74
  4. Step 4: Simplify right side
    567.42x = 405,095.31
  5. Step 5: Solve for x
    x = 405,095.31/567.42
  6. Step 6: Final answer
    x = 713.92

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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.