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Finding the Fourth Proportional to 240.30, 360.30 and 124.65

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Solution

The fourth proportional to 240.30, 360.30 and 124.65 is: 186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.30 : 360.30 = 124.65 : x
  2. Step 2: Convert to fraction form
    240.30/360.30 = 124.65/x
  3. Step 3: Cross multiply
    240.30x = 360.30 × 124.65
  4. Step 4: Simplify right side
    240.30x = 44,911.40
  5. Step 5: Solve for x
    x = 44,911.40/240.30
  6. Step 6: Final answer
    x = 186.90

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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.