Home / 1,064.20-1,594.67-486.40

Finding the Fourth Proportional to 1,064.20, 1,594.67 and 486.40

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Solution

The fourth proportional to 1,064.20, 1,594.67 and 486.40 is: 728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.20 : 1,594.67 = 486.40 : x
  2. Step 2: Convert to fraction form
    1,064.20/1,594.67 = 486.40/x
  3. Step 3: Cross multiply
    1,064.20x = 1,594.67 × 486.40
  4. Step 4: Simplify right side
    1,064.20x = 775,647.49
  5. Step 5: Solve for x
    x = 775,647.49/1,064.20
  6. Step 6: Final answer
    x = 728.85

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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.