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Finding the Fourth Proportional to 567.30, 783.17 and 381.77

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Solution

The fourth proportional to 567.30, 783.17 and 381.77 is: 527.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.30 : 783.17 = 381.77 : x
  2. Step 2: Convert to fraction form
    567.30/783.17 = 381.77/x
  3. Step 3: Cross multiply
    567.30x = 783.17 × 381.77
  4. Step 4: Simplify right side
    567.30x = 298,986.90
  5. Step 5: Solve for x
    x = 298,986.90/567.30
  6. Step 6: Final answer
    x = 527.03

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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.