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Finding the Fourth Proportional to 114.16, 170.47 and 89.84

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Solution

The fourth proportional to 114.16, 170.47 and 89.84 is: 134.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.16 : 170.47 = 89.84 : x
  2. Step 2: Convert to fraction form
    114.16/170.47 = 89.84/x
  3. Step 3: Cross multiply
    114.16x = 170.47 × 89.84
  4. Step 4: Simplify right side
    114.16x = 15,315.02
  5. Step 5: Solve for x
    x = 15,315.02/114.16
  6. Step 6: Final answer
    x = 134.15

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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.