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Finding the Fourth Proportional to 288.03, 397.42 and 170.02

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Solution

The fourth proportional to 288.03, 397.42 and 170.02 is: 234.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.03 : 397.42 = 170.02 : x
  2. Step 2: Convert to fraction form
    288.03/397.42 = 170.02/x
  3. Step 3: Cross multiply
    288.03x = 397.42 × 170.02
  4. Step 4: Simplify right side
    288.03x = 67,569.35
  5. Step 5: Solve for x
    x = 67,569.35/288.03
  6. Step 6: Final answer
    x = 234.59

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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.