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Finding the Fourth Proportional to 902.91, 1,354.01 and 580.35

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Solution

The fourth proportional to 902.91, 1,354.01 and 580.35 is: 870.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.91 : 1,354.01 = 580.35 : x
  2. Step 2: Convert to fraction form
    902.91/1,354.01 = 580.35/x
  3. Step 3: Cross multiply
    902.91x = 1,354.01 × 580.35
  4. Step 4: Simplify right side
    902.91x = 785,796.80
  5. Step 5: Solve for x
    x = 785,796.80/902.91
  6. Step 6: Final answer
    x = 870.29

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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.