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Finding the Fourth Proportional to 885.99, 1,223.01 and 591.15

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Solution

The fourth proportional to 885.99, 1,223.01 and 591.15 is: 816.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.99 : 1,223.01 = 591.15 : x
  2. Step 2: Convert to fraction form
    885.99/1,223.01 = 591.15/x
  3. Step 3: Cross multiply
    885.99x = 1,223.01 × 591.15
  4. Step 4: Simplify right side
    885.99x = 722,982.36
  5. Step 5: Solve for x
    x = 722,982.36/885.99
  6. Step 6: Final answer
    x = 816.02

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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.