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Finding the Fourth Proportional to 164.32, 245.33 and 141.40

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Solution

The fourth proportional to 164.32, 245.33 and 141.40 is: 211.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.32 : 245.33 = 141.40 : x
  2. Step 2: Convert to fraction form
    164.32/245.33 = 141.40/x
  3. Step 3: Cross multiply
    164.32x = 245.33 × 141.40
  4. Step 4: Simplify right side
    164.32x = 34,689.66
  5. Step 5: Solve for x
    x = 34,689.66/164.32
  6. Step 6: Final answer
    x = 211.11

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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.