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Finding the Fourth Proportional to 1,674.25, 2,310.25 and 928.18

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Solution

The fourth proportional to 1,674.25, 2,310.25 and 928.18 is: 1,280.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.25 : 2,310.25 = 928.18 : x
  2. Step 2: Convert to fraction form
    1,674.25/2,310.25 = 928.18/x
  3. Step 3: Cross multiply
    1,674.25x = 2,310.25 × 928.18
  4. Step 4: Simplify right side
    1,674.25x = 2,144,327.85
  5. Step 5: Solve for x
    x = 2,144,327.85/1,674.25
  6. Step 6: Final answer
    x = 1,280.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.