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Finding the Fourth Proportional to 550.97, 754.84 and 530.21

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Solution

The fourth proportional to 550.97, 754.84 and 530.21 is: 726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.97 : 754.84 = 530.21 : x
  2. Step 2: Convert to fraction form
    550.97/754.84 = 530.21/x
  3. Step 3: Cross multiply
    550.97x = 754.84 × 530.21
  4. Step 4: Simplify right side
    550.97x = 400,223.28
  5. Step 5: Solve for x
    x = 400,223.28/550.97
  6. Step 6: Final answer
    x = 726.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.