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Finding the Fourth Proportional to 63.60, 94.80 and 63.50

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Solution

The fourth proportional to 63.60, 94.80 and 63.50 is: 94.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.60 : 94.80 = 63.50 : x
  2. Step 2: Convert to fraction form
    63.60/94.80 = 63.50/x
  3. Step 3: Cross multiply
    63.60x = 94.80 × 63.50
  4. Step 4: Simplify right side
    63.60x = 6,019.25
  5. Step 5: Solve for x
    x = 6,019.25/63.60
  6. Step 6: Final answer
    x = 94.64

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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.