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Finding the Fourth Proportional to 572.80, 859.86 and 356.50

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Solution

The fourth proportional to 572.80, 859.86 and 356.50 is: 535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.80 : 859.86 = 356.50 : x
  2. Step 2: Convert to fraction form
    572.80/859.86 = 356.50/x
  3. Step 3: Cross multiply
    572.80x = 859.86 × 356.50
  4. Step 4: Simplify right side
    572.80x = 306,540.09
  5. Step 5: Solve for x
    x = 306,540.09/572.80
  6. Step 6: Final answer
    x = 535.16

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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.