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Finding the Fourth Proportional to 999.48, 1,381.18 and 750.37

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Solution

The fourth proportional to 999.48, 1,381.18 and 750.37 is: 1,036.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.48 : 1,381.18 = 750.37 : x
  2. Step 2: Convert to fraction form
    999.48/1,381.18 = 750.37/x
  3. Step 3: Cross multiply
    999.48x = 1,381.18 × 750.37
  4. Step 4: Simplify right side
    999.48x = 1,036,396.04
  5. Step 5: Solve for x
    x = 1,036,396.04/999.48
  6. Step 6: Final answer
    x = 1,036.94

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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.