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Finding the Fourth Proportional to 263.18, 392.98 and 235.58

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Solution

The fourth proportional to 263.18, 392.98 and 235.58 is: 351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.18 : 392.98 = 235.58 : x
  2. Step 2: Convert to fraction form
    263.18/392.98 = 235.58/x
  3. Step 3: Cross multiply
    263.18x = 392.98 × 235.58
  4. Step 4: Simplify right side
    263.18x = 92,577.05
  5. Step 5: Solve for x
    x = 92,577.05/263.18
  6. Step 6: Final answer
    x = 351.76

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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.