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Finding the Fourth Proportional to 356.70, 534.95 and 235.61

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Solution

The fourth proportional to 356.70, 534.95 and 235.61 is: 353.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.70 : 534.95 = 235.61 : x
  2. Step 2: Convert to fraction form
    356.70/534.95 = 235.61/x
  3. Step 3: Cross multiply
    356.70x = 534.95 × 235.61
  4. Step 4: Simplify right side
    356.70x = 126,035.72
  5. Step 5: Solve for x
    x = 126,035.72/356.70
  6. Step 6: Final answer
    x = 353.34

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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.