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Finding the Fourth Proportional to 750.84, 1,126.40 and 263.84

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Solution

The fourth proportional to 750.84, 1,126.40 and 263.84 is: 395.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.84 : 1,126.40 = 263.84 : x
  2. Step 2: Convert to fraction form
    750.84/1,126.40 = 263.84/x
  3. Step 3: Cross multiply
    750.84x = 1,126.40 × 263.84
  4. Step 4: Simplify right side
    750.84x = 297,189.38
  5. Step 5: Solve for x
    x = 297,189.38/750.84
  6. Step 6: Final answer
    x = 395.81

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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.