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Finding the Fourth Proportional to 164.16, 247.49 and 155.34

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Solution

The fourth proportional to 164.16, 247.49 and 155.34 is: 234.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.16 : 247.49 = 155.34 : x
  2. Step 2: Convert to fraction form
    164.16/247.49 = 155.34/x
  3. Step 3: Cross multiply
    164.16x = 247.49 × 155.34
  4. Step 4: Simplify right side
    164.16x = 38,444.32
  5. Step 5: Solve for x
    x = 38,444.32/164.16
  6. Step 6: Final answer
    x = 234.19

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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.