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Finding the Fourth Proportional to 1,088.72, 1,632.65 and 395.27

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Solution

The fourth proportional to 1,088.72, 1,632.65 and 395.27 is: 592.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.72 : 1,632.65 = 395.27 : x
  2. Step 2: Convert to fraction form
    1,088.72/1,632.65 = 395.27/x
  3. Step 3: Cross multiply
    1,088.72x = 1,632.65 × 395.27
  4. Step 4: Simplify right side
    1,088.72x = 645,327.43
  5. Step 5: Solve for x
    x = 645,327.43/1,088.72
  6. Step 6: Final answer
    x = 592.74

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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.