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Finding the Fourth Proportional to 895.72, 1,334.12 and 855.74

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Solution

The fourth proportional to 895.72, 1,334.12 and 855.74 is: 1,274.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.72 : 1,334.12 = 855.74 : x
  2. Step 2: Convert to fraction form
    895.72/1,334.12 = 855.74/x
  3. Step 3: Cross multiply
    895.72x = 1,334.12 × 855.74
  4. Step 4: Simplify right side
    895.72x = 1,141,655.32
  5. Step 5: Solve for x
    x = 1,141,655.32/895.72
  6. Step 6: Final answer
    x = 1,274.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.