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Finding the Fourth Proportional to 164.21, 245.93 and 156.13

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Solution

The fourth proportional to 164.21, 245.93 and 156.13 is: 233.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.21 : 245.93 = 156.13 : x
  2. Step 2: Convert to fraction form
    164.21/245.93 = 156.13/x
  3. Step 3: Cross multiply
    164.21x = 245.93 × 156.13
  4. Step 4: Simplify right side
    164.21x = 38,395.66
  5. Step 5: Solve for x
    x = 38,395.66/164.21
  6. Step 6: Final answer
    x = 233.83

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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.