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Finding the Fourth Proportional to 430.09, 594.40 and 325.15

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Solution

The fourth proportional to 430.09, 594.40 and 325.15 is: 449.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.09 : 594.40 = 325.15 : x
  2. Step 2: Convert to fraction form
    430.09/594.40 = 325.15/x
  3. Step 3: Cross multiply
    430.09x = 594.40 × 325.15
  4. Step 4: Simplify right side
    430.09x = 193,266.67
  5. Step 5: Solve for x
    x = 193,266.67/430.09
  6. Step 6: Final answer
    x = 449.36

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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.