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Finding the Fourth Proportional to 889.89, 1,335.43 and 533.99

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Solution

The fourth proportional to 889.89, 1,335.43 and 533.99 is: 801.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.89 : 1,335.43 = 533.99 : x
  2. Step 2: Convert to fraction form
    889.89/1,335.43 = 533.99/x
  3. Step 3: Cross multiply
    889.89x = 1,335.43 × 533.99
  4. Step 4: Simplify right side
    889.89x = 713,106.27
  5. Step 5: Solve for x
    x = 713,106.27/889.89
  6. Step 6: Final answer
    x = 801.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.