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Finding the Fourth Proportional to 572.28, 857.88 and 328.50

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Solution

The fourth proportional to 572.28, 857.88 and 328.50 is: 492.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.28 : 857.88 = 328.50 : x
  2. Step 2: Convert to fraction form
    572.28/857.88 = 328.50/x
  3. Step 3: Cross multiply
    572.28x = 857.88 × 328.50
  4. Step 4: Simplify right side
    572.28x = 281,813.58
  5. Step 5: Solve for x
    x = 281,813.58/572.28
  6. Step 6: Final answer
    x = 492.44

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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.