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Finding the Fourth Proportional to 459.24, 689.94 and 394.44

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Solution

The fourth proportional to 459.24, 689.94 and 394.44 is: 592.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.24 : 689.94 = 394.44 : x
  2. Step 2: Convert to fraction form
    459.24/689.94 = 394.44/x
  3. Step 3: Cross multiply
    459.24x = 689.94 × 394.44
  4. Step 4: Simplify right side
    459.24x = 272,139.93
  5. Step 5: Solve for x
    x = 272,139.93/459.24
  6. Step 6: Final answer
    x = 592.59

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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.