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Finding the Fourth Proportional to 325.04, 488.22 and 312.32

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Solution

The fourth proportional to 325.04, 488.22 and 312.32 is: 469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.04 : 488.22 = 312.32 : x
  2. Step 2: Convert to fraction form
    325.04/488.22 = 312.32/x
  3. Step 3: Cross multiply
    325.04x = 488.22 × 312.32
  4. Step 4: Simplify right side
    325.04x = 152,480.87
  5. Step 5: Solve for x
    x = 152,480.87/325.04
  6. Step 6: Final answer
    x = 469.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.