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Finding the Fourth Proportional to 524.48, 786.75 and 216.47

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Solution

The fourth proportional to 524.48, 786.75 and 216.47 is: 324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.48 : 786.75 = 216.47 : x
  2. Step 2: Convert to fraction form
    524.48/786.75 = 216.47/x
  3. Step 3: Cross multiply
    524.48x = 786.75 × 216.47
  4. Step 4: Simplify right side
    524.48x = 170,309.74
  5. Step 5: Solve for x
    x = 170,309.74/524.48
  6. Step 6: Final answer
    x = 324.72

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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.