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Finding the Fourth Proportional to 895.05, 1,342.71 and 278.71

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Solution

The fourth proportional to 895.05, 1,342.71 and 278.71 is: 418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.05 : 1,342.71 = 278.71 : x
  2. Step 2: Convert to fraction form
    895.05/1,342.71 = 278.71/x
  3. Step 3: Cross multiply
    895.05x = 1,342.71 × 278.71
  4. Step 4: Simplify right side
    895.05x = 374,223.35
  5. Step 5: Solve for x
    x = 374,223.35/895.05
  6. Step 6: Final answer
    x = 418.10

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Double scale
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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.