Home / 859.03-1,185.47-486.01

Finding the Fourth Proportional to 859.03, 1,185.47 and 486.01

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Solution

The fourth proportional to 859.03, 1,185.47 and 486.01 is: 670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    859.03 : 1,185.47 = 486.01 : x
  2. Step 2: Convert to fraction form
    859.03/1,185.47 = 486.01/x
  3. Step 3: Cross multiply
    859.03x = 1,185.47 × 486.01
  4. Step 4: Simplify right side
    859.03x = 576,150.27
  5. Step 5: Solve for x
    x = 576,150.27/859.03
  6. Step 6: Final answer
    x = 670.70

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1.5x scale

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.