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Finding the Fourth Proportional to 595.28, 820.69 and 488.54

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Solution

The fourth proportional to 595.28, 820.69 and 488.54 is: 673.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.28 : 820.69 = 488.54 : x
  2. Step 2: Convert to fraction form
    595.28/820.69 = 488.54/x
  3. Step 3: Cross multiply
    595.28x = 820.69 × 488.54
  4. Step 4: Simplify right side
    595.28x = 400,939.89
  5. Step 5: Solve for x
    x = 400,939.89/595.28
  6. Step 6: Final answer
    x = 673.54

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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.