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Finding the Fourth Proportional to 548.76, 824.50 and 487.32

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Solution

The fourth proportional to 548.76, 824.50 and 487.32 is: 732.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.76 : 824.50 = 487.32 : x
  2. Step 2: Convert to fraction form
    548.76/824.50 = 487.32/x
  3. Step 3: Cross multiply
    548.76x = 824.50 × 487.32
  4. Step 4: Simplify right side
    548.76x = 401,795.34
  5. Step 5: Solve for x
    x = 401,795.34/548.76
  6. Step 6: Final answer
    x = 732.19

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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.