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Finding the Fourth Proportional to 943.97, 1,303.02 and 551.32

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Solution

The fourth proportional to 943.97, 1,303.02 and 551.32 is: 761.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.97 : 1,303.02 = 551.32 : x
  2. Step 2: Convert to fraction form
    943.97/1,303.02 = 551.32/x
  3. Step 3: Cross multiply
    943.97x = 1,303.02 × 551.32
  4. Step 4: Simplify right side
    943.97x = 718,377.73
  5. Step 5: Solve for x
    x = 718,377.73/943.97
  6. Step 6: Final answer
    x = 761.02

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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.