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Finding the Fourth Proportional to 911.08, 1,256.40 and 596.02

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Solution

The fourth proportional to 911.08, 1,256.40 and 596.02 is: 821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.08 : 1,256.40 = 596.02 : x
  2. Step 2: Convert to fraction form
    911.08/1,256.40 = 596.02/x
  3. Step 3: Cross multiply
    911.08x = 1,256.40 × 596.02
  4. Step 4: Simplify right side
    911.08x = 748,839.53
  5. Step 5: Solve for x
    x = 748,839.53/911.08
  6. Step 6: Final answer
    x = 821.93

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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.