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Finding the Fourth Proportional to 895.79, 1,236.20 and 523.03

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Solution

The fourth proportional to 895.79, 1,236.20 and 523.03 is: 721.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.79 : 1,236.20 = 523.03 : x
  2. Step 2: Convert to fraction form
    895.79/1,236.20 = 523.03/x
  3. Step 3: Cross multiply
    895.79x = 1,236.20 × 523.03
  4. Step 4: Simplify right side
    895.79x = 646,569.69
  5. Step 5: Solve for x
    x = 646,569.69/895.79
  6. Step 6: Final answer
    x = 721.79

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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.