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Finding the Fourth Proportional to 434.87, 599.74 and 328.79

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Solution

The fourth proportional to 434.87, 599.74 and 328.79 is: 453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.87 : 599.74 = 328.79 : x
  2. Step 2: Convert to fraction form
    434.87/599.74 = 328.79/x
  3. Step 3: Cross multiply
    434.87x = 599.74 × 328.79
  4. Step 4: Simplify right side
    434.87x = 197,189.19
  5. Step 5: Solve for x
    x = 197,189.19/434.87
  6. Step 6: Final answer
    x = 453.45

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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.