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Finding the Fourth Proportional to 944.28, 1,303.02 and 551.23

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Solution

The fourth proportional to 944.28, 1,303.02 and 551.23 is: 760.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.28 : 1,303.02 = 551.23 : x
  2. Step 2: Convert to fraction form
    944.28/1,303.02 = 551.23/x
  3. Step 3: Cross multiply
    944.28x = 1,303.02 × 551.23
  4. Step 4: Simplify right side
    944.28x = 718,260.46
  5. Step 5: Solve for x
    x = 718,260.46/944.28
  6. Step 6: Final answer
    x = 760.64

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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.