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Finding the Fourth Proportional to 1,523.77, 2,286.25 and 646.46

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Solution

The fourth proportional to 1,523.77, 2,286.25 and 646.46 is: 969.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,523.77 : 2,286.25 = 646.46 : x
  2. Step 2: Convert to fraction form
    1,523.77/2,286.25 = 646.46/x
  3. Step 3: Cross multiply
    1,523.77x = 2,286.25 × 646.46
  4. Step 4: Simplify right side
    1,523.77x = 1,477,969.18
  5. Step 5: Solve for x
    x = 1,477,969.18/1,523.77
  6. Step 6: Final answer
    x = 969.94

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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.