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Finding the Fourth Proportional to 503.22, 755.15 and 214.66

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Solution

The fourth proportional to 503.22, 755.15 and 214.66 is: 322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.22 : 755.15 = 214.66 : x
  2. Step 2: Convert to fraction form
    503.22/755.15 = 214.66/x
  3. Step 3: Cross multiply
    503.22x = 755.15 × 214.66
  4. Step 4: Simplify right side
    503.22x = 162,100.50
  5. Step 5: Solve for x
    x = 162,100.50/503.22
  6. Step 6: Final answer
    x = 322.13

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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.