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Finding the Fourth Proportional to 895.46, 1,343.39 and 645.57

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Solution

The fourth proportional to 895.46, 1,343.39 and 645.57 is: 968.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.46 : 1,343.39 = 645.57 : x
  2. Step 2: Convert to fraction form
    895.46/1,343.39 = 645.57/x
  3. Step 3: Cross multiply
    895.46x = 1,343.39 × 645.57
  4. Step 4: Simplify right side
    895.46x = 867,249.05
  5. Step 5: Solve for x
    x = 867,249.05/895.46
  6. Step 6: Final answer
    x = 968.50

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Double scale
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1.5x scale

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.