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Finding the Fourth Proportional to 613.51, 846.64 and 347.93

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Solution

The fourth proportional to 613.51, 846.64 and 347.93 is: 480.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.51 : 846.64 = 347.93 : x
  2. Step 2: Convert to fraction form
    613.51/846.64 = 347.93/x
  3. Step 3: Cross multiply
    613.51x = 846.64 × 347.93
  4. Step 4: Simplify right side
    613.51x = 294,571.46
  5. Step 5: Solve for x
    x = 294,571.46/613.51
  6. Step 6: Final answer
    x = 480.14

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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.