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Finding the Fourth Proportional to 434.26, 599.43 and 317.98

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Solution

The fourth proportional to 434.26, 599.43 and 317.98 is: 438.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.26 : 599.43 = 317.98 : x
  2. Step 2: Convert to fraction form
    434.26/599.43 = 317.98/x
  3. Step 3: Cross multiply
    434.26x = 599.43 × 317.98
  4. Step 4: Simplify right side
    434.26x = 190,606.75
  5. Step 5: Solve for x
    x = 190,606.75/434.26
  6. Step 6: Final answer
    x = 438.92

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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.