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Finding the Fourth Proportional to 1,063.60, 1,595.40 and 486.48

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Solution

The fourth proportional to 1,063.60, 1,595.40 and 486.48 is: 729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,063.60 : 1,595.40 = 486.48 : x
  2. Step 2: Convert to fraction form
    1,063.60/1,595.40 = 486.48/x
  3. Step 3: Cross multiply
    1,063.60x = 1,595.40 × 486.48
  4. Step 4: Simplify right side
    1,063.60x = 776,122.22
  5. Step 5: Solve for x
    x = 776,122.22/1,063.60
  6. Step 6: Final answer
    x = 729.71

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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.