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Finding the Fourth Proportional to 325.08, 448.02 and 315.72

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Solution

The fourth proportional to 325.08, 448.02 and 315.72 is: 435.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.08 : 448.02 = 315.72 : x
  2. Step 2: Convert to fraction form
    325.08/448.02 = 315.72/x
  3. Step 3: Cross multiply
    325.08x = 448.02 × 315.72
  4. Step 4: Simplify right side
    325.08x = 141,448.87
  5. Step 5: Solve for x
    x = 141,448.87/325.08
  6. Step 6: Final answer
    x = 435.12

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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.