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Finding the Fourth Proportional to 971.99, 1,341.28 and 552.27

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Solution

The fourth proportional to 971.99, 1,341.28 and 552.27 is: 762.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.99 : 1,341.28 = 552.27 : x
  2. Step 2: Convert to fraction form
    971.99/1,341.28 = 552.27/x
  3. Step 3: Cross multiply
    971.99x = 1,341.28 × 552.27
  4. Step 4: Simplify right side
    971.99x = 740,748.43
  5. Step 5: Solve for x
    x = 740,748.43/971.99
  6. Step 6: Final answer
    x = 762.09

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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.