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Finding the Fourth Proportional to 459.24, 633.87 and 319.38

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Solution

The fourth proportional to 459.24, 633.87 and 319.38 is: 440.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.24 : 633.87 = 319.38 : x
  2. Step 2: Convert to fraction form
    459.24/633.87 = 319.38/x
  3. Step 3: Cross multiply
    459.24x = 633.87 × 319.38
  4. Step 4: Simplify right side
    459.24x = 202,445.40
  5. Step 5: Solve for x
    x = 202,445.40/459.24
  6. Step 6: Final answer
    x = 440.83

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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.