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Finding the Fourth Proportional to 1,088.79, 1,633.20 and 472.06

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Solution

The fourth proportional to 1,088.79, 1,633.20 and 472.06 is: 708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.79 : 1,633.20 = 472.06 : x
  2. Step 2: Convert to fraction form
    1,088.79/1,633.20 = 472.06/x
  3. Step 3: Cross multiply
    1,088.79x = 1,633.20 × 472.06
  4. Step 4: Simplify right side
    1,088.79x = 770,968.39
  5. Step 5: Solve for x
    x = 770,968.39/1,088.79
  6. Step 6: Final answer
    x = 708.10

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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.