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Finding the Fourth Proportional to 488.56, 732.56 and 214.56

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Solution

The fourth proportional to 488.56, 732.56 and 214.56 is: 321.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.56 : 732.56 = 214.56 : x
  2. Step 2: Convert to fraction form
    488.56/732.56 = 214.56/x
  3. Step 3: Cross multiply
    488.56x = 732.56 × 214.56
  4. Step 4: Simplify right side
    488.56x = 157,178.07
  5. Step 5: Solve for x
    x = 157,178.07/488.56
  6. Step 6: Final answer
    x = 321.72

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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.