Home / 1,459.04-2,188.84-485.20

Finding the Fourth Proportional to 1,459.04, 2,188.84 and 485.20

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Solution

The fourth proportional to 1,459.04, 2,188.84 and 485.20 is: 727.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.04 : 2,188.84 = 485.20 : x
  2. Step 2: Convert to fraction form
    1,459.04/2,188.84 = 485.20/x
  3. Step 3: Cross multiply
    1,459.04x = 2,188.84 × 485.20
  4. Step 4: Simplify right side
    1,459.04x = 1,062,025.17
  5. Step 5: Solve for x
    x = 1,062,025.17/1,459.04
  6. Step 6: Final answer
    x = 727.89

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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.