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Finding the Fourth Proportional to 750.82, 1,036.56 and 502.56

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Solution

The fourth proportional to 750.82, 1,036.56 and 502.56 is: 693.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.82 : 1,036.56 = 502.56 : x
  2. Step 2: Convert to fraction form
    750.82/1,036.56 = 502.56/x
  3. Step 3: Cross multiply
    750.82x = 1,036.56 × 502.56
  4. Step 4: Simplify right side
    750.82x = 520,933.59
  5. Step 5: Solve for x
    x = 520,933.59/750.82
  6. Step 6: Final answer
    x = 693.82

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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.