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Finding the Fourth Proportional to 1,064.16, 1,595.42 and 486.62

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Solution

The fourth proportional to 1,064.16, 1,595.42 and 486.62 is: 729.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.16 : 1,595.42 = 486.62 : x
  2. Step 2: Convert to fraction form
    1,064.16/1,595.42 = 486.62/x
  3. Step 3: Cross multiply
    1,064.16x = 1,595.42 × 486.62
  4. Step 4: Simplify right side
    1,064.16x = 776,363.28
  5. Step 5: Solve for x
    x = 776,363.28/1,064.16
  6. Step 6: Final answer
    x = 729.56

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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.