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Finding the Fourth Proportional to 1,444.49, 2,169.35 and 751.65

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Solution

The fourth proportional to 1,444.49, 2,169.35 and 751.65 is: 1,128.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,444.49 : 2,169.35 = 751.65 : x
  2. Step 2: Convert to fraction form
    1,444.49/2,169.35 = 751.65/x
  3. Step 3: Cross multiply
    1,444.49x = 2,169.35 × 751.65
  4. Step 4: Simplify right side
    1,444.49x = 1,630,588.17
  5. Step 5: Solve for x
    x = 1,630,588.17/1,444.49
  6. Step 6: Final answer
    x = 1,128.84

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1.5x scale

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.