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Finding the Fourth Proportional to 553.39, 762.67 and 537.59

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Solution

The fourth proportional to 553.39, 762.67 and 537.59 is: 740.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.39 : 762.67 = 537.59 : x
  2. Step 2: Convert to fraction form
    553.39/762.67 = 537.59/x
  3. Step 3: Cross multiply
    553.39x = 762.67 × 537.59
  4. Step 4: Simplify right side
    553.39x = 410,003.77
  5. Step 5: Solve for x
    x = 410,003.77/553.39
  6. Step 6: Final answer
    x = 740.89

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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.