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Finding the Fourth Proportional to 107.02, 159.68 and 100.64

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Solution

The fourth proportional to 107.02, 159.68 and 100.64 is: 150.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.02 : 159.68 = 100.64 : x
  2. Step 2: Convert to fraction form
    107.02/159.68 = 100.64/x
  3. Step 3: Cross multiply
    107.02x = 159.68 × 100.64
  4. Step 4: Simplify right side
    107.02x = 16,070.20
  5. Step 5: Solve for x
    x = 16,070.20/107.02
  6. Step 6: Final answer
    x = 150.16

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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.