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Finding the Fourth Proportional to 895.86, 1,344.96 and 690.57

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Solution

The fourth proportional to 895.86, 1,344.96 and 690.57 is: 1,036.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.86 : 1,344.96 = 690.57 : x
  2. Step 2: Convert to fraction form
    895.86/1,344.96 = 690.57/x
  3. Step 3: Cross multiply
    895.86x = 1,344.96 × 690.57
  4. Step 4: Simplify right side
    895.86x = 928,789.03
  5. Step 5: Solve for x
    x = 928,789.03/895.86
  6. Step 6: Final answer
    x = 1,036.76

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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.