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Finding the Fourth Proportional to 103.94, 155.65 and 60.50

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Solution

The fourth proportional to 103.94, 155.65 and 60.50 is: 90.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.94 : 155.65 = 60.50 : x
  2. Step 2: Convert to fraction form
    103.94/155.65 = 60.50/x
  3. Step 3: Cross multiply
    103.94x = 155.65 × 60.50
  4. Step 4: Simplify right side
    103.94x = 9,416.83
  5. Step 5: Solve for x
    x = 9,416.83/103.94
  6. Step 6: Final answer
    x = 90.60

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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.