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Finding the Fourth Proportional to 1,088.96, 1,633.56 and 430.85

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Solution

The fourth proportional to 1,088.96, 1,633.56 and 430.85 is: 646.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.96 : 1,633.56 = 430.85 : x
  2. Step 2: Convert to fraction form
    1,088.96/1,633.56 = 430.85/x
  3. Step 3: Cross multiply
    1,088.96x = 1,633.56 × 430.85
  4. Step 4: Simplify right side
    1,088.96x = 703,819.33
  5. Step 5: Solve for x
    x = 703,819.33/1,088.96
  6. Step 6: Final answer
    x = 646.32

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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.