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Finding the Fourth Proportional to 1,009.52, 1,511.85 and 575.36

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Solution

The fourth proportional to 1,009.52, 1,511.85 and 575.36 is: 861.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.52 : 1,511.85 = 575.36 : x
  2. Step 2: Convert to fraction form
    1,009.52/1,511.85 = 575.36/x
  3. Step 3: Cross multiply
    1,009.52x = 1,511.85 × 575.36
  4. Step 4: Simplify right side
    1,009.52x = 869,858.02
  5. Step 5: Solve for x
    x = 869,858.02/1,009.52
  6. Step 6: Final answer
    x = 861.66

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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.