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Finding the Fourth Proportional to 649.21, 973.58 and 186.83

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Solution

The fourth proportional to 649.21, 973.58 and 186.83 is: 280.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.21 : 973.58 = 186.83 : x
  2. Step 2: Convert to fraction form
    649.21/973.58 = 186.83/x
  3. Step 3: Cross multiply
    649.21x = 973.58 × 186.83
  4. Step 4: Simplify right side
    649.21x = 181,898.19
  5. Step 5: Solve for x
    x = 181,898.19/649.21
  6. Step 6: Final answer
    x = 280.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.