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Finding the Fourth Proportional to 459.44, 687.43 and 283.13

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Solution

The fourth proportional to 459.44, 687.43 and 283.13 is: 423.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.44 : 687.43 = 283.13 : x
  2. Step 2: Convert to fraction form
    459.44/687.43 = 283.13/x
  3. Step 3: Cross multiply
    459.44x = 687.43 × 283.13
  4. Step 4: Simplify right side
    459.44x = 194,632.06
  5. Step 5: Solve for x
    x = 194,632.06/459.44
  6. Step 6: Final answer
    x = 423.63

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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.