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Finding the Fourth Proportional to 897.29, 1,344.33 and 765.95

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Solution

The fourth proportional to 897.29, 1,344.33 and 765.95 is: 1,147.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.29 : 1,344.33 = 765.95 : x
  2. Step 2: Convert to fraction form
    897.29/1,344.33 = 765.95/x
  3. Step 3: Cross multiply
    897.29x = 1,344.33 × 765.95
  4. Step 4: Simplify right side
    897.29x = 1,029,682.84
  5. Step 5: Solve for x
    x = 1,029,682.84/897.29
  6. Step 6: Final answer
    x = 1,147.55

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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.