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Finding the Fourth Proportional to 109.04, 150.59 and 74.00

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Solution

The fourth proportional to 109.04, 150.59 and 74.00 is: 102.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.04 : 150.59 = 74.00 : x
  2. Step 2: Convert to fraction form
    109.04/150.59 = 74.00/x
  3. Step 3: Cross multiply
    109.04x = 150.59 × 74.00
  4. Step 4: Simplify right side
    109.04x = 11,142.54
  5. Step 5: Solve for x
    x = 11,142.54/109.04
  6. Step 6: Final answer
    x = 102.19

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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.