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Finding the Fourth Proportional to 110.08, 152.08 and 84.40

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Solution

The fourth proportional to 110.08, 152.08 and 84.40 is: 116.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.08 : 152.08 = 84.40 : x
  2. Step 2: Convert to fraction form
    110.08/152.08 = 84.40/x
  3. Step 3: Cross multiply
    110.08x = 152.08 × 84.40
  4. Step 4: Simplify right side
    110.08x = 12,835.55
  5. Step 5: Solve for x
    x = 12,835.55/110.08
  6. Step 6: Final answer
    x = 116.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.