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Finding the Fourth Proportional to 240.23, 359.37 and 215.61

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Solution

The fourth proportional to 240.23, 359.37 and 215.61 is: 322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.23 : 359.37 = 215.61 : x
  2. Step 2: Convert to fraction form
    240.23/359.37 = 215.61/x
  3. Step 3: Cross multiply
    240.23x = 359.37 × 215.61
  4. Step 4: Simplify right side
    240.23x = 77,483.77
  5. Step 5: Solve for x
    x = 77,483.77/240.23
  6. Step 6: Final answer
    x = 322.55

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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.