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Finding the Fourth Proportional to 360.66, 540.90 and 155.46

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Solution

The fourth proportional to 360.66, 540.90 and 155.46 is: 233.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.66 : 540.90 = 155.46 : x
  2. Step 2: Convert to fraction form
    360.66/540.90 = 155.46/x
  3. Step 3: Cross multiply
    360.66x = 540.90 × 155.46
  4. Step 4: Simplify right side
    360.66x = 84,088.31
  5. Step 5: Solve for x
    x = 84,088.31/360.66
  6. Step 6: Final answer
    x = 233.15

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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.