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Finding the Fourth Proportional to 943.52, 1,302.09 and 570.43

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Solution

The fourth proportional to 943.52, 1,302.09 and 570.43 is: 787.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.52 : 1,302.09 = 570.43 : x
  2. Step 2: Convert to fraction form
    943.52/1,302.09 = 570.43/x
  3. Step 3: Cross multiply
    943.52x = 1,302.09 × 570.43
  4. Step 4: Simplify right side
    943.52x = 742,747.94
  5. Step 5: Solve for x
    x = 742,747.94/943.52
  6. Step 6: Final answer
    x = 787.21

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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.