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Finding the Fourth Proportional to 556.80, 766.17 and 540.75

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Solution

The fourth proportional to 556.80, 766.17 and 540.75 is: 744.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.80 : 766.17 = 540.75 : x
  2. Step 2: Convert to fraction form
    556.80/766.17 = 540.75/x
  3. Step 3: Cross multiply
    556.80x = 766.17 × 540.75
  4. Step 4: Simplify right side
    556.80x = 414,306.43
  5. Step 5: Solve for x
    x = 414,306.43/556.80
  6. Step 6: Final answer
    x = 744.08

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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.