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Finding the Fourth Proportional to 235.40, 351.12 and 203.08

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Solution

The fourth proportional to 235.40, 351.12 and 203.08 is: 302.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.40 : 351.12 = 203.08 : x
  2. Step 2: Convert to fraction form
    235.40/351.12 = 203.08/x
  3. Step 3: Cross multiply
    235.40x = 351.12 × 203.08
  4. Step 4: Simplify right side
    235.40x = 71,305.45
  5. Step 5: Solve for x
    x = 71,305.45/235.40
  6. Step 6: Final answer
    x = 302.91

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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.