Home / 1,459.02-2,188.68-485.18

Finding the Fourth Proportional to 1,459.02, 2,188.68 and 485.18

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Solution

The fourth proportional to 1,459.02, 2,188.68 and 485.18 is: 727.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.02 : 2,188.68 = 485.18 : x
  2. Step 2: Convert to fraction form
    1,459.02/2,188.68 = 485.18/x
  3. Step 3: Cross multiply
    1,459.02x = 2,188.68 × 485.18
  4. Step 4: Simplify right side
    1,459.02x = 1,061,903.76
  5. Step 5: Solve for x
    x = 1,061,903.76/1,459.02
  6. Step 6: Final answer
    x = 727.82

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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.