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Finding the Fourth Proportional to 1,424.67, 1,966.53 and 834.99

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Solution

The fourth proportional to 1,424.67, 1,966.53 and 834.99 is: 1,152.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.67 : 1,966.53 = 834.99 : x
  2. Step 2: Convert to fraction form
    1,424.67/1,966.53 = 834.99/x
  3. Step 3: Cross multiply
    1,424.67x = 1,966.53 × 834.99
  4. Step 4: Simplify right side
    1,424.67x = 1,642,032.88
  5. Step 5: Solve for x
    x = 1,642,032.88/1,424.67
  6. Step 6: Final answer
    x = 1,152.57

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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.