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Finding the Fourth Proportional to 1,086.01, 1,628.75 and 500.64

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Solution

The fourth proportional to 1,086.01, 1,628.75 and 500.64 is: 750.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.01 : 1,628.75 = 500.64 : x
  2. Step 2: Convert to fraction form
    1,086.01/1,628.75 = 500.64/x
  3. Step 3: Cross multiply
    1,086.01x = 1,628.75 × 500.64
  4. Step 4: Simplify right side
    1,086.01x = 815,418.65
  5. Step 5: Solve for x
    x = 815,418.65/1,086.01
  6. Step 6: Final answer
    x = 750.84

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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.