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Finding the Fourth Proportional to 115.11, 157.60 and 114.00

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Solution

The fourth proportional to 115.11, 157.60 and 114.00 is: 156.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.11 : 157.60 = 114.00 : x
  2. Step 2: Convert to fraction form
    115.11/157.60 = 114.00/x
  3. Step 3: Cross multiply
    115.11x = 157.60 × 114.00
  4. Step 4: Simplify right side
    115.11x = 17,965.61
  5. Step 5: Solve for x
    x = 17,965.61/115.11
  6. Step 6: Final answer
    x = 156.07

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.