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Finding the Fourth Proportional to 572.98, 860.28 and 543.10

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Solution

The fourth proportional to 572.98, 860.28 and 543.10 is: 815.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.98 : 860.28 = 543.10 : x
  2. Step 2: Convert to fraction form
    572.98/860.28 = 543.10/x
  3. Step 3: Cross multiply
    572.98x = 860.28 × 543.10
  4. Step 4: Simplify right side
    572.98x = 467,218.07
  5. Step 5: Solve for x
    x = 467,218.07/572.98
  6. Step 6: Final answer
    x = 815.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.