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Finding the Fourth Proportional to 235.98, 353.53 and 210.56

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Solution

The fourth proportional to 235.98, 353.53 and 210.56 is: 315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.98 : 353.53 = 210.56 : x
  2. Step 2: Convert to fraction form
    235.98/353.53 = 210.56/x
  3. Step 3: Cross multiply
    235.98x = 353.53 × 210.56
  4. Step 4: Simplify right side
    235.98x = 74,439.28
  5. Step 5: Solve for x
    x = 74,439.28/235.98
  6. Step 6: Final answer
    x = 315.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.