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Finding the Fourth Proportional to 1,077.05, 1,615.71 and 528.77

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Solution

The fourth proportional to 1,077.05, 1,615.71 and 528.77 is: 793.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.05 : 1,615.71 = 528.77 : x
  2. Step 2: Convert to fraction form
    1,077.05/1,615.71 = 528.77/x
  3. Step 3: Cross multiply
    1,077.05x = 1,615.71 × 528.77
  4. Step 4: Simplify right side
    1,077.05x = 854,338.98
  5. Step 5: Solve for x
    x = 854,338.98/1,077.05
  6. Step 6: Final answer
    x = 793.22

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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.