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Finding the Fourth Proportional to 1,645.21, 2,468.79 and 605.95

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Solution

The fourth proportional to 1,645.21, 2,468.79 and 605.95 is: 909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.21 : 2,468.79 = 605.95 : x
  2. Step 2: Convert to fraction form
    1,645.21/2,468.79 = 605.95/x
  3. Step 3: Cross multiply
    1,645.21x = 2,468.79 × 605.95
  4. Step 4: Simplify right side
    1,645.21x = 1,495,953.23
  5. Step 5: Solve for x
    x = 1,495,953.23/1,645.21
  6. Step 6: Final answer
    x = 909.28

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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.