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Finding the Fourth Proportional to 524.48, 722.40 and 488.64

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Solution

The fourth proportional to 524.48, 722.40 and 488.64 is: 673.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.48 : 722.40 = 488.64 : x
  2. Step 2: Convert to fraction form
    524.48/722.40 = 488.64/x
  3. Step 3: Cross multiply
    524.48x = 722.40 × 488.64
  4. Step 4: Simplify right side
    524.48x = 352,993.54
  5. Step 5: Solve for x
    x = 352,993.54/524.48
  6. Step 6: Final answer
    x = 673.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.