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Finding the Fourth Proportional to 201.44, 302.16 and 57.16

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Solution

The fourth proportional to 201.44, 302.16 and 57.16 is: 85.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.44 : 302.16 = 57.16 : x
  2. Step 2: Convert to fraction form
    201.44/302.16 = 57.16/x
  3. Step 3: Cross multiply
    201.44x = 302.16 × 57.16
  4. Step 4: Simplify right side
    201.44x = 17,271.47
  5. Step 5: Solve for x
    x = 17,271.47/201.44
  6. Step 6: Final answer
    x = 85.74

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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.