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Finding the Fourth Proportional to 360.58, 540.86 and 215.34

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Solution

The fourth proportional to 360.58, 540.86 and 215.34 is: 323.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.58 : 540.86 = 215.34 : x
  2. Step 2: Convert to fraction form
    360.58/540.86 = 215.34/x
  3. Step 3: Cross multiply
    360.58x = 540.86 × 215.34
  4. Step 4: Simplify right side
    360.58x = 116,468.79
  5. Step 5: Solve for x
    x = 116,468.79/360.58
  6. Step 6: Final answer
    x = 323.00

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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.