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Finding the Fourth Proportional to 1,650.32, 2,278.13 and 1,020.65

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Solution

The fourth proportional to 1,650.32, 2,278.13 and 1,020.65 is: 1,408.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,650.32 : 2,278.13 = 1,020.65 : x
  2. Step 2: Convert to fraction form
    1,650.32/2,278.13 = 1,020.65/x
  3. Step 3: Cross multiply
    1,650.32x = 2,278.13 × 1,020.65
  4. Step 4: Simplify right side
    1,650.32x = 2,325,169.71
  5. Step 5: Solve for x
    x = 2,325,169.71/1,650.32
  6. Step 6: Final answer
    x = 1,408.92

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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.