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Finding the Fourth Proportional to 235.08, 351.30 and 210.99

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Solution

The fourth proportional to 235.08, 351.30 and 210.99 is: 315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.08 : 351.30 = 210.99 : x
  2. Step 2: Convert to fraction form
    235.08/351.30 = 210.99/x
  3. Step 3: Cross multiply
    235.08x = 351.30 × 210.99
  4. Step 4: Simplify right side
    235.08x = 74,120.79
  5. Step 5: Solve for x
    x = 74,120.79/235.08
  6. Step 6: Final answer
    x = 315.30

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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.