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Finding the Fourth Proportional to 165.07, 247.58 and 104.02

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Solution

The fourth proportional to 165.07, 247.58 and 104.02 is: 156.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.07 : 247.58 = 104.02 : x
  2. Step 2: Convert to fraction form
    165.07/247.58 = 104.02/x
  3. Step 3: Cross multiply
    165.07x = 247.58 × 104.02
  4. Step 4: Simplify right side
    165.07x = 25,753.27
  5. Step 5: Solve for x
    x = 25,753.27/165.07
  6. Step 6: Final answer
    x = 156.01

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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.