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Finding the Fourth Proportional to 895.01, 1,342.65 and 278.77

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Solution

The fourth proportional to 895.01, 1,342.65 and 278.77 is: 418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.01 : 1,342.65 = 278.77 : x
  2. Step 2: Convert to fraction form
    895.01/1,342.65 = 278.77/x
  3. Step 3: Cross multiply
    895.01x = 1,342.65 × 278.77
  4. Step 4: Simplify right side
    895.01x = 374,290.54
  5. Step 5: Solve for x
    x = 374,290.54/895.01
  6. Step 6: Final answer
    x = 418.20

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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.