Home / 1,088.30-1,632.45-439.03

Finding the Fourth Proportional to 1,088.30, 1,632.45 and 439.03

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Solution

The fourth proportional to 1,088.30, 1,632.45 and 439.03 is: 658.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.30 : 1,632.45 = 439.03 : x
  2. Step 2: Convert to fraction form
    1,088.30/1,632.45 = 439.03/x
  3. Step 3: Cross multiply
    1,088.30x = 1,632.45 × 439.03
  4. Step 4: Simplify right side
    1,088.30x = 716,688.80
  5. Step 5: Solve for x
    x = 716,688.80/1,088.30
  6. Step 6: Final answer
    x = 658.54

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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.