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Finding the Fourth Proportional to 613.16, 846.62 and 392.23

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Solution

The fourth proportional to 613.16, 846.62 and 392.23 is: 541.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.16 : 846.62 = 392.23 : x
  2. Step 2: Convert to fraction form
    613.16/846.62 = 392.23/x
  3. Step 3: Cross multiply
    613.16x = 846.62 × 392.23
  4. Step 4: Simplify right side
    613.16x = 332,069.76
  5. Step 5: Solve for x
    x = 332,069.76/613.16
  6. Step 6: Final answer
    x = 541.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.