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Finding the Fourth Proportional to 210.08, 289.28 and 173.18

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Solution

The fourth proportional to 210.08, 289.28 and 173.18 is: 238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.08 : 289.28 = 173.18 : x
  2. Step 2: Convert to fraction form
    210.08/289.28 = 173.18/x
  3. Step 3: Cross multiply
    210.08x = 289.28 × 173.18
  4. Step 4: Simplify right side
    210.08x = 50,097.51
  5. Step 5: Solve for x
    x = 50,097.51/210.08
  6. Step 6: Final answer
    x = 238.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.