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Finding the Fourth Proportional to 458.39, 632.09 and 325.55

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Solution

The fourth proportional to 458.39, 632.09 and 325.55 is: 448.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.39 : 632.09 = 325.55 : x
  2. Step 2: Convert to fraction form
    458.39/632.09 = 325.55/x
  3. Step 3: Cross multiply
    458.39x = 632.09 × 325.55
  4. Step 4: Simplify right side
    458.39x = 205,779.29
  5. Step 5: Solve for x
    x = 205,779.29/458.39
  6. Step 6: Final answer
    x = 448.92

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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.