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Finding the Fourth Proportional to 895.08, 1,331.79 and 872.76

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Solution

The fourth proportional to 895.08, 1,331.79 and 872.76 is: 1,298.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.08 : 1,331.79 = 872.76 : x
  2. Step 2: Convert to fraction form
    895.08/1,331.79 = 872.76/x
  3. Step 3: Cross multiply
    895.08x = 1,331.79 × 872.76
  4. Step 4: Simplify right side
    895.08x = 1,162,333.04
  5. Step 5: Solve for x
    x = 1,162,333.04/895.08
  6. Step 6: Final answer
    x = 1,298.58

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1.5x scale

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.