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Finding the Fourth Proportional to 571.88, 858.52 and 543.18

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Solution

The fourth proportional to 571.88, 858.52 and 543.18 is: 815.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.88 : 858.52 = 543.18 : x
  2. Step 2: Convert to fraction form
    571.88/858.52 = 543.18/x
  3. Step 3: Cross multiply
    571.88x = 858.52 × 543.18
  4. Step 4: Simplify right side
    571.88x = 466,330.89
  5. Step 5: Solve for x
    x = 466,330.89/571.88
  6. Step 6: Final answer
    x = 815.43

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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.