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Finding the Fourth Proportional to 1,051.55, 1,576.67 and 531.26

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Solution

The fourth proportional to 1,051.55, 1,576.67 and 531.26 is: 796.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.55 : 1,576.67 = 531.26 : x
  2. Step 2: Convert to fraction form
    1,051.55/1,576.67 = 531.26/x
  3. Step 3: Cross multiply
    1,051.55x = 1,576.67 × 531.26
  4. Step 4: Simplify right side
    1,051.55x = 837,617.08
  5. Step 5: Solve for x
    x = 837,617.08/1,051.55
  6. Step 6: Final answer
    x = 796.56

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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.