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Finding the Fourth Proportional to 1,035.03, 1,551.56 and 663.70

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Solution

The fourth proportional to 1,035.03, 1,551.56 and 663.70 is: 994.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.03 : 1,551.56 = 663.70 : x
  2. Step 2: Convert to fraction form
    1,035.03/1,551.56 = 663.70/x
  3. Step 3: Cross multiply
    1,035.03x = 1,551.56 × 663.70
  4. Step 4: Simplify right side
    1,035.03x = 1,029,770.37
  5. Step 5: Solve for x
    x = 1,029,770.37/1,035.03
  6. Step 6: Final answer
    x = 994.92

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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.