Home / 690.08-1,035.24-325.04

Finding the Fourth Proportional to 690.08, 1,035.24 and 325.04

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Solution

The fourth proportional to 690.08, 1,035.24 and 325.04 is: 487.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.08 : 1,035.24 = 325.04 : x
  2. Step 2: Convert to fraction form
    690.08/1,035.24 = 325.04/x
  3. Step 3: Cross multiply
    690.08x = 1,035.24 × 325.04
  4. Step 4: Simplify right side
    690.08x = 336,494.41
  5. Step 5: Solve for x
    x = 336,494.41/690.08
  6. Step 6: Final answer
    x = 487.62

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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.