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Finding the Fourth Proportional to 613.10, 846.08 and 347.64

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Solution

The fourth proportional to 613.10, 846.08 and 347.64 is: 479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.10 : 846.08 = 347.64 : x
  2. Step 2: Convert to fraction form
    613.10/846.08 = 347.64/x
  3. Step 3: Cross multiply
    613.10x = 846.08 × 347.64
  4. Step 4: Simplify right side
    613.10x = 294,131.25
  5. Step 5: Solve for x
    x = 294,131.25/613.10
  6. Step 6: Final answer
    x = 479.74

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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.