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Finding the Fourth Proportional to 895.97, 1,344.15 and 279.72

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Solution

The fourth proportional to 895.97, 1,344.15 and 279.72 is: 419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.97 : 1,344.15 = 279.72 : x
  2. Step 2: Convert to fraction form
    895.97/1,344.15 = 279.72/x
  3. Step 3: Cross multiply
    895.97x = 1,344.15 × 279.72
  4. Step 4: Simplify right side
    895.97x = 375,985.64
  5. Step 5: Solve for x
    x = 375,985.64/895.97
  6. Step 6: Final answer
    x = 419.64

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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.