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Finding the Fourth Proportional to 889.79, 1,333.29 and 564.47

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Solution

The fourth proportional to 889.79, 1,333.29 and 564.47 is: 845.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.79 : 1,333.29 = 564.47 : x
  2. Step 2: Convert to fraction form
    889.79/1,333.29 = 564.47/x
  3. Step 3: Cross multiply
    889.79x = 1,333.29 × 564.47
  4. Step 4: Simplify right side
    889.79x = 752,602.66
  5. Step 5: Solve for x
    x = 752,602.66/889.79
  6. Step 6: Final answer
    x = 845.83

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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.