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Finding the Fourth Proportional to 895.49, 1,343.38 and 279.07

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Solution

The fourth proportional to 895.49, 1,343.38 and 279.07 is: 418.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.49 : 1,343.38 = 279.07 : x
  2. Step 2: Convert to fraction form
    895.49/1,343.38 = 279.07/x
  3. Step 3: Cross multiply
    895.49x = 1,343.38 × 279.07
  4. Step 4: Simplify right side
    895.49x = 374,888.94
  5. Step 5: Solve for x
    x = 374,888.94/895.49
  6. Step 6: Final answer
    x = 418.64

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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.