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Finding the Fourth Proportional to 753.83, 1,130.76 and 495.48

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Solution

The fourth proportional to 753.83, 1,130.76 and 495.48 is: 743.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.83 : 1,130.76 = 495.48 : x
  2. Step 2: Convert to fraction form
    753.83/1,130.76 = 495.48/x
  3. Step 3: Cross multiply
    753.83x = 1,130.76 × 495.48
  4. Step 4: Simplify right side
    753.83x = 560,268.96
  5. Step 5: Solve for x
    x = 560,268.96/753.83
  6. Step 6: Final answer
    x = 743.23

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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.