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Finding the Fourth Proportional to 250.64, 376.08 and 88.40

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Solution

The fourth proportional to 250.64, 376.08 and 88.40 is: 132.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.64 : 376.08 = 88.40 : x
  2. Step 2: Convert to fraction form
    250.64/376.08 = 88.40/x
  3. Step 3: Cross multiply
    250.64x = 376.08 × 88.40
  4. Step 4: Simplify right side
    250.64x = 33,245.47
  5. Step 5: Solve for x
    x = 33,245.47/250.64
  6. Step 6: Final answer
    x = 132.64

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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.