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Finding the Fourth Proportional to 553.04, 761.16 and 481.76

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Solution

The fourth proportional to 553.04, 761.16 and 481.76 is: 663.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.04 : 761.16 = 481.76 : x
  2. Step 2: Convert to fraction form
    553.04/761.16 = 481.76/x
  3. Step 3: Cross multiply
    553.04x = 761.16 × 481.76
  4. Step 4: Simplify right side
    553.04x = 366,696.44
  5. Step 5: Solve for x
    x = 366,696.44/553.04
  6. Step 6: Final answer
    x = 663.06

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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.