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Finding the Fourth Proportional to 703.28, 1,053.20 and 496.87

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Solution

The fourth proportional to 703.28, 1,053.20 and 496.87 is: 744.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.28 : 1,053.20 = 496.87 : x
  2. Step 2: Convert to fraction form
    703.28/1,053.20 = 496.87/x
  3. Step 3: Cross multiply
    703.28x = 1,053.20 × 496.87
  4. Step 4: Simplify right side
    703.28x = 523,302.09
  5. Step 5: Solve for x
    x = 523,302.09/703.28
  6. Step 6: Final answer
    x = 744.09

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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.