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Finding the Fourth Proportional to 356.96, 535.64 and 235.28

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Solution

The fourth proportional to 356.96, 535.64 and 235.28 is: 353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.96 : 535.64 = 235.28 : x
  2. Step 2: Convert to fraction form
    356.96/535.64 = 235.28/x
  3. Step 3: Cross multiply
    356.96x = 535.64 × 235.28
  4. Step 4: Simplify right side
    356.96x = 126,021.52
  5. Step 5: Solve for x
    x = 126,021.52/356.96
  6. Step 6: Final answer
    x = 353.05

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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.