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Finding the Fourth Proportional to 1,459.84, 2,189.87 and 535.68

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Solution

The fourth proportional to 1,459.84, 2,189.87 and 535.68 is: 803.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.84 : 2,189.87 = 535.68 : x
  2. Step 2: Convert to fraction form
    1,459.84/2,189.87 = 535.68/x
  3. Step 3: Cross multiply
    1,459.84x = 2,189.87 × 535.68
  4. Step 4: Simplify right side
    1,459.84x = 1,173,069.56
  5. Step 5: Solve for x
    x = 1,173,069.56/1,459.84
  6. Step 6: Final answer
    x = 803.56

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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.