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Finding the Fourth Proportional to 1,484.10, 2,048.16 and 863.10

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Solution

The fourth proportional to 1,484.10, 2,048.16 and 863.10 is: 1,191.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,484.10 : 2,048.16 = 863.10 : x
  2. Step 2: Convert to fraction form
    1,484.10/2,048.16 = 863.10/x
  3. Step 3: Cross multiply
    1,484.10x = 2,048.16 × 863.10
  4. Step 4: Simplify right side
    1,484.10x = 1,767,766.90
  5. Step 5: Solve for x
    x = 1,767,766.90/1,484.10
  6. Step 6: Final answer
    x = 1,191.14

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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.