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Finding the Fourth Proportional to 843.84, 1,164.24 and 549

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Solution

The fourth proportional to 843.84, 1,164.24 and 549 is: 757.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.84 : 1,164.24 = 549 : x
  2. Step 2: Convert to fraction form
    843.84/1,164.24 = 549/x
  3. Step 3: Cross multiply
    843.84x = 1,164.24 × 549
  4. Step 4: Simplify right side
    843.84x = 639,167.76
  5. Step 5: Solve for x
    x = 639,167.76/843.84
  6. Step 6: Final answer
    x = 757.45

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1.5x scale

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.