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Finding the Fourth Proportional to 740.45, 1,110.53 and 246.86

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Solution

The fourth proportional to 740.45, 1,110.53 and 246.86 is: 370.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.45 : 1,110.53 = 246.86 : x
  2. Step 2: Convert to fraction form
    740.45/1,110.53 = 246.86/x
  3. Step 3: Cross multiply
    740.45x = 1,110.53 × 246.86
  4. Step 4: Simplify right side
    740.45x = 274,138.65
  5. Step 5: Solve for x
    x = 274,138.65/740.45
  6. Step 6: Final answer
    x = 370.23

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1.5x scale

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.