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Finding the Fourth Proportional to 360.93, 542.22 and 312.33

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Solution

The fourth proportional to 360.93, 542.22 and 312.33 is: 469.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.93 : 542.22 = 312.33 : x
  2. Step 2: Convert to fraction form
    360.93/542.22 = 312.33/x
  3. Step 3: Cross multiply
    360.93x = 542.22 × 312.33
  4. Step 4: Simplify right side
    360.93x = 169,351.57
  5. Step 5: Solve for x
    x = 169,351.57/360.93
  6. Step 6: Final answer
    x = 469.21

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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.