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Finding the Fourth Proportional to 650.49, 979.26 and 561.20

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Solution

The fourth proportional to 650.49, 979.26 and 561.20 is: 844.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.49 : 979.26 = 561.20 : x
  2. Step 2: Convert to fraction form
    650.49/979.26 = 561.20/x
  3. Step 3: Cross multiply
    650.49x = 979.26 × 561.20
  4. Step 4: Simplify right side
    650.49x = 549,555.82
  5. Step 5: Solve for x
    x = 549,555.82/650.49
  6. Step 6: Final answer
    x = 844.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.