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Finding the Fourth Proportional to 753.39, 1,130.33 and 266.33

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Solution

The fourth proportional to 753.39, 1,130.33 and 266.33 is: 399.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.39 : 1,130.33 = 266.33 : x
  2. Step 2: Convert to fraction form
    753.39/1,130.33 = 266.33/x
  3. Step 3: Cross multiply
    753.39x = 1,130.33 × 266.33
  4. Step 4: Simplify right side
    753.39x = 301,044.28
  5. Step 5: Solve for x
    x = 301,044.28/753.39
  6. Step 6: Final answer
    x = 399.59

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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.