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Finding the Fourth Proportional to 1,151.81, 1,727.10 and 535.80

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Solution

The fourth proportional to 1,151.81, 1,727.10 and 535.80 is: 803.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.81 : 1,727.10 = 535.80 : x
  2. Step 2: Convert to fraction form
    1,151.81/1,727.10 = 535.80/x
  3. Step 3: Cross multiply
    1,151.81x = 1,727.10 × 535.80
  4. Step 4: Simplify right side
    1,151.81x = 925,377.50
  5. Step 5: Solve for x
    x = 925,377.50/1,151.81
  6. Step 6: Final answer
    x = 803.42

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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.