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Finding the Fourth Proportional to 613.52, 846.65 and 351.53

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Solution

The fourth proportional to 613.52, 846.65 and 351.53 is: 485.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.52 : 846.65 = 351.53 : x
  2. Step 2: Convert to fraction form
    613.52/846.65 = 351.53/x
  3. Step 3: Cross multiply
    613.52x = 846.65 × 351.53
  4. Step 4: Simplify right side
    613.52x = 297,621.12
  5. Step 5: Solve for x
    x = 297,621.12/613.52
  6. Step 6: Final answer
    x = 485.10

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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.