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Finding the Fourth Proportional to 309.42, 463.05 and 235.98

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Solution

The fourth proportional to 309.42, 463.05 and 235.98 is: 353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.42 : 463.05 = 235.98 : x
  2. Step 2: Convert to fraction form
    309.42/463.05 = 235.98/x
  3. Step 3: Cross multiply
    309.42x = 463.05 × 235.98
  4. Step 4: Simplify right side
    309.42x = 109,270.54
  5. Step 5: Solve for x
    x = 109,270.54/309.42
  6. Step 6: Final answer
    x = 353.15

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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.