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Finding the Fourth Proportional to 763.36, 1,053.06 and 514.36

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Solution

The fourth proportional to 763.36, 1,053.06 and 514.36 is: 709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    763.36 : 1,053.06 = 514.36 : x
  2. Step 2: Convert to fraction form
    763.36/1,053.06 = 514.36/x
  3. Step 3: Cross multiply
    763.36x = 1,053.06 × 514.36
  4. Step 4: Simplify right side
    763.36x = 541,651.94
  5. Step 5: Solve for x
    x = 541,651.94/763.36
  6. Step 6: Final answer
    x = 709.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.