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Finding the Fourth Proportional to 165.04, 248.70 and 156.16

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Solution

The fourth proportional to 165.04, 248.70 and 156.16 is: 235.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.04 : 248.70 = 156.16 : x
  2. Step 2: Convert to fraction form
    165.04/248.70 = 156.16/x
  3. Step 3: Cross multiply
    165.04x = 248.70 × 156.16
  4. Step 4: Simplify right side
    165.04x = 38,836.99
  5. Step 5: Solve for x
    x = 38,836.99/165.04
  6. Step 6: Final answer
    x = 235.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.