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Finding the Fourth Proportional to 1,089.38, 1,633.98 and 541.46

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Solution

The fourth proportional to 1,089.38, 1,633.98 and 541.46 is: 812.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.38 : 1,633.98 = 541.46 : x
  2. Step 2: Convert to fraction form
    1,089.38/1,633.98 = 541.46/x
  3. Step 3: Cross multiply
    1,089.38x = 1,633.98 × 541.46
  4. Step 4: Simplify right side
    1,089.38x = 884,734.81
  5. Step 5: Solve for x
    x = 884,734.81/1,089.38
  6. Step 6: Final answer
    x = 812.15

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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.