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Finding the Fourth Proportional to 561.40, 836.99 and 548.62

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Solution

The fourth proportional to 561.40, 836.99 and 548.62 is: 817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.40 : 836.99 = 548.62 : x
  2. Step 2: Convert to fraction form
    561.40/836.99 = 548.62/x
  3. Step 3: Cross multiply
    561.40x = 836.99 × 548.62
  4. Step 4: Simplify right side
    561.40x = 459,189.45
  5. Step 5: Solve for x
    x = 459,189.45/561.40
  6. Step 6: Final answer
    x = 817.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.