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Finding the Fourth Proportional to 569.43, 852.53 and 518.40

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Solution

The fourth proportional to 569.43, 852.53 and 518.40 is: 776.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.43 : 852.53 = 518.40 : x
  2. Step 2: Convert to fraction form
    569.43/852.53 = 518.40/x
  3. Step 3: Cross multiply
    569.43x = 852.53 × 518.40
  4. Step 4: Simplify right side
    569.43x = 441,948.96
  5. Step 5: Solve for x
    x = 441,948.96/569.43
  6. Step 6: Final answer
    x = 776.13

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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.