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Finding the Fourth Proportional to 639.04, 882.08 and 541.12

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Solution

The fourth proportional to 639.04, 882.08 and 541.12 is: 746.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.04 : 882.08 = 541.12 : x
  2. Step 2: Convert to fraction form
    639.04/882.08 = 541.12/x
  3. Step 3: Cross multiply
    639.04x = 882.08 × 541.12
  4. Step 4: Simplify right side
    639.04x = 477,311.13
  5. Step 5: Solve for x
    x = 477,311.13/639.04
  6. Step 6: Final answer
    x = 746.92

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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.