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Finding the Fourth Proportional to 1,063.36, 1,597.44 and 771.76

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Solution

The fourth proportional to 1,063.36, 1,597.44 and 771.76 is: 1,159.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,063.36 : 1,597.44 = 771.76 : x
  2. Step 2: Convert to fraction form
    1,063.36/1,597.44 = 771.76/x
  3. Step 3: Cross multiply
    1,063.36x = 1,597.44 × 771.76
  4. Step 4: Simplify right side
    1,063.36x = 1,232,840.29
  5. Step 5: Solve for x
    x = 1,232,840.29/1,063.36
  6. Step 6: Final answer
    x = 1,159.38

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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.