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Finding the Fourth Proportional to 522.17, 783.53 and 379.07

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Solution

The fourth proportional to 522.17, 783.53 and 379.07 is: 568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.17 : 783.53 = 379.07 : x
  2. Step 2: Convert to fraction form
    522.17/783.53 = 379.07/x
  3. Step 3: Cross multiply
    522.17x = 783.53 × 379.07
  4. Step 4: Simplify right side
    522.17x = 297,006.90
  5. Step 5: Solve for x
    x = 297,006.90/522.17
  6. Step 6: Final answer
    x = 568.80

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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.