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Finding the Fourth Proportional to 750.65, 1,036.07 and 456.11

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Solution

The fourth proportional to 750.65, 1,036.07 and 456.11 is: 629.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.65 : 1,036.07 = 456.11 : x
  2. Step 2: Convert to fraction form
    750.65/1,036.07 = 456.11/x
  3. Step 3: Cross multiply
    750.65x = 1,036.07 × 456.11
  4. Step 4: Simplify right side
    750.65x = 472,562.59
  5. Step 5: Solve for x
    x = 472,562.59/750.65
  6. Step 6: Final answer
    x = 629.54

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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.