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Finding the Fourth Proportional to 434.90, 599.59 and 303.68

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Solution

The fourth proportional to 434.90, 599.59 and 303.68 is: 418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.90 : 599.59 = 303.68 : x
  2. Step 2: Convert to fraction form
    434.90/599.59 = 303.68/x
  3. Step 3: Cross multiply
    434.90x = 599.59 × 303.68
  4. Step 4: Simplify right side
    434.90x = 182,083.49
  5. Step 5: Solve for x
    x = 182,083.49/434.90
  6. Step 6: Final answer
    x = 418.68

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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.