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Finding the Fourth Proportional to 360.19, 540.28 and 103.69

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Solution

The fourth proportional to 360.19, 540.28 and 103.69 is: 155.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.19 : 540.28 = 103.69 : x
  2. Step 2: Convert to fraction form
    360.19/540.28 = 103.69/x
  3. Step 3: Cross multiply
    360.19x = 540.28 × 103.69
  4. Step 4: Simplify right side
    360.19x = 56,021.63
  5. Step 5: Solve for x
    x = 56,021.63/360.19
  6. Step 6: Final answer
    x = 155.53

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