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Finding the Fourth Proportional to 107.28, 160.04 and 99.52

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Solution

The fourth proportional to 107.28, 160.04 and 99.52 is: 148.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.28 : 160.04 = 99.52 : x
  2. Step 2: Convert to fraction form
    107.28/160.04 = 99.52/x
  3. Step 3: Cross multiply
    107.28x = 160.04 × 99.52
  4. Step 4: Simplify right side
    107.28x = 15,927.18
  5. Step 5: Solve for x
    x = 15,927.18/107.28
  6. Step 6: Final answer
    x = 148.46

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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.