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Finding the Fourth Proportional to 1,498.84, 2,247.18 and 920.50

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Solution

The fourth proportional to 1,498.84, 2,247.18 and 920.50 is: 1,380.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,498.84 : 2,247.18 = 920.50 : x
  2. Step 2: Convert to fraction form
    1,498.84/2,247.18 = 920.50/x
  3. Step 3: Cross multiply
    1,498.84x = 2,247.18 × 920.50
  4. Step 4: Simplify right side
    1,498.84x = 2,068,529.19
  5. Step 5: Solve for x
    x = 2,068,529.19/1,498.84
  6. Step 6: Final answer
    x = 1,380.09

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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.