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Finding the Fourth Proportional to 114.51, 170.77 and 103.57

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Solution

The fourth proportional to 114.51, 170.77 and 103.57 is: 154.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.51 : 170.77 = 103.57 : x
  2. Step 2: Convert to fraction form
    114.51/170.77 = 103.57/x
  3. Step 3: Cross multiply
    114.51x = 170.77 × 103.57
  4. Step 4: Simplify right side
    114.51x = 17,686.13
  5. Step 5: Solve for x
    x = 17,686.13/114.51
  6. Step 6: Final answer
    x = 154.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.