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Finding the Fourth Proportional to 524.68, 786.76 and 216.42

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Solution

The fourth proportional to 524.68, 786.76 and 216.42 is: 324.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.68 : 786.76 = 216.42 : x
  2. Step 2: Convert to fraction form
    524.68/786.76 = 216.42/x
  3. Step 3: Cross multiply
    524.68x = 786.76 × 216.42
  4. Step 4: Simplify right side
    524.68x = 170,270.60
  5. Step 5: Solve for x
    x = 170,270.60/524.68
  6. Step 6: Final answer
    x = 324.52

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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.