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Finding the Fourth Proportional to 859.03, 1,185.69 and 527.74

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Solution

The fourth proportional to 859.03, 1,185.69 and 527.74 is: 728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    859.03 : 1,185.69 = 527.74 : x
  2. Step 2: Convert to fraction form
    859.03/1,185.69 = 527.74/x
  3. Step 3: Cross multiply
    859.03x = 1,185.69 × 527.74
  4. Step 4: Simplify right side
    859.03x = 625,735.42
  5. Step 5: Solve for x
    x = 625,735.42/859.03
  6. Step 6: Final answer
    x = 728.42

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Double scale
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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.