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Finding the Fourth Proportional to 1,363.84, 2,045.94 and 670.53

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Solution

The fourth proportional to 1,363.84, 2,045.94 and 670.53 is: 1,005.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363.84 : 2,045.94 = 670.53 : x
  2. Step 2: Convert to fraction form
    1,363.84/2,045.94 = 670.53/x
  3. Step 3: Cross multiply
    1,363.84x = 2,045.94 × 670.53
  4. Step 4: Simplify right side
    1,363.84x = 1,371,864.15
  5. Step 5: Solve for x
    x = 1,371,864.15/1,363.84
  6. Step 6: Final answer
    x = 1,005.88

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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.