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Finding the Fourth Proportional to 185.00, 255.15 and 157.32

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Solution

The fourth proportional to 185.00, 255.15 and 157.32 is: 216.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.00 : 255.15 = 157.32 : x
  2. Step 2: Convert to fraction form
    185.00/255.15 = 157.32/x
  3. Step 3: Cross multiply
    185.00x = 255.15 × 157.32
  4. Step 4: Simplify right side
    185.00x = 40,140.20
  5. Step 5: Solve for x
    x = 40,140.20/185.00
  6. Step 6: Final answer
    x = 216.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.