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Finding the Fourth Proportional to 114.49, 156.97 and 111.45

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Solution

The fourth proportional to 114.49, 156.97 and 111.45 is: 152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.49 : 156.97 = 111.45 : x
  2. Step 2: Convert to fraction form
    114.49/156.97 = 111.45/x
  3. Step 3: Cross multiply
    114.49x = 156.97 × 111.45
  4. Step 4: Simplify right side
    114.49x = 17,494.31
  5. Step 5: Solve for x
    x = 17,494.31/114.49
  6. Step 6: Final answer
    x = 152.80

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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.