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Finding the Fourth Proportional to 1,416.79, 1,955.24 and 827.52

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Solution

The fourth proportional to 1,416.79, 1,955.24 and 827.52 is: 1,142.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.79 : 1,955.24 = 827.52 : x
  2. Step 2: Convert to fraction form
    1,416.79/1,955.24 = 827.52/x
  3. Step 3: Cross multiply
    1,416.79x = 1,955.24 × 827.52
  4. Step 4: Simplify right side
    1,416.79x = 1,617,991.84
  5. Step 5: Solve for x
    x = 1,617,991.84/1,416.79
  6. Step 6: Final answer
    x = 1,142.01

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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.