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Finding the Fourth Proportional to 1,498.70, 2,068.30 and 835.62

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Solution

The fourth proportional to 1,498.70, 2,068.30 and 835.62 is: 1,153.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,498.70 : 2,068.30 = 835.62 : x
  2. Step 2: Convert to fraction form
    1,498.70/2,068.30 = 835.62/x
  3. Step 3: Cross multiply
    1,498.70x = 2,068.30 × 835.62
  4. Step 4: Simplify right side
    1,498.70x = 1,728,306.13
  5. Step 5: Solve for x
    x = 1,728,306.13/1,498.70
  6. Step 6: Final answer
    x = 1,153.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.