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Finding the Fourth Proportional to 114.90, 172.35 and 94.57

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Solution

The fourth proportional to 114.90, 172.35 and 94.57 is: 141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.90 : 172.35 = 94.57 : x
  2. Step 2: Convert to fraction form
    114.90/172.35 = 94.57/x
  3. Step 3: Cross multiply
    114.90x = 172.35 × 94.57
  4. Step 4: Simplify right side
    114.90x = 16,298.71
  5. Step 5: Solve for x
    x = 16,298.71/114.90
  6. Step 6: Final answer
    x = 141.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.