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Finding the Fourth Proportional to 1,132.92, 1,563.21 and 684.68

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Solution

The fourth proportional to 1,132.92, 1,563.21 and 684.68 is: 944.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.92 : 1,563.21 = 684.68 : x
  2. Step 2: Convert to fraction form
    1,132.92/1,563.21 = 684.68/x
  3. Step 3: Cross multiply
    1,132.92x = 1,563.21 × 684.68
  4. Step 4: Simplify right side
    1,132.92x = 1,070,290.81
  5. Step 5: Solve for x
    x = 1,070,290.81/1,132.92
  6. Step 6: Final answer
    x = 944.72

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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.