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Finding the Fourth Proportional to 905.04, 1,360.26 and 885.87

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Solution

The fourth proportional to 905.04, 1,360.26 and 885.87 is: 1,331.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.04 : 1,360.26 = 885.87 : x
  2. Step 2: Convert to fraction form
    905.04/1,360.26 = 885.87/x
  3. Step 3: Cross multiply
    905.04x = 1,360.26 × 885.87
  4. Step 4: Simplify right side
    905.04x = 1,205,013.53
  5. Step 5: Solve for x
    x = 1,205,013.53/905.04
  6. Step 6: Final answer
    x = 1,331.45

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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.