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Finding the Fourth Proportional to 572.01, 857.70 and 181.90

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Solution

The fourth proportional to 572.01, 857.70 and 181.90 is: 272.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.01 : 857.70 = 181.90 : x
  2. Step 2: Convert to fraction form
    572.01/857.70 = 181.90/x
  3. Step 3: Cross multiply
    572.01x = 857.70 × 181.90
  4. Step 4: Simplify right side
    572.01x = 156,018.65
  5. Step 5: Solve for x
    x = 156,018.65/572.01
  6. Step 6: Final answer
    x = 272.76

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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.