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Finding the Fourth Proportional to 246.65, 369.77 and 90.38

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Solution

The fourth proportional to 246.65, 369.77 and 90.38 is: 135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.65 : 369.77 = 90.38 : x
  2. Step 2: Convert to fraction form
    246.65/369.77 = 90.38/x
  3. Step 3: Cross multiply
    246.65x = 369.77 × 90.38
  4. Step 4: Simplify right side
    246.65x = 33,420.29
  5. Step 5: Solve for x
    x = 33,420.29/246.65
  6. Step 6: Final answer
    x = 135.50

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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.