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Finding the Fourth Proportional to 561.87, 772.13 and 536.15

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Solution

The fourth proportional to 561.87, 772.13 and 536.15 is: 736.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.87 : 772.13 = 536.15 : x
  2. Step 2: Convert to fraction form
    561.87/772.13 = 536.15/x
  3. Step 3: Cross multiply
    561.87x = 772.13 × 536.15
  4. Step 4: Simplify right side
    561.87x = 413,977.50
  5. Step 5: Solve for x
    x = 413,977.50/561.87
  6. Step 6: Final answer
    x = 736.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.