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Finding the Fourth Proportional to 561.04, 836.26 and 543.36

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Solution

The fourth proportional to 561.04, 836.26 and 543.36 is: 809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.04 : 836.26 = 543.36 : x
  2. Step 2: Convert to fraction form
    561.04/836.26 = 543.36/x
  3. Step 3: Cross multiply
    561.04x = 836.26 × 543.36
  4. Step 4: Simplify right side
    561.04x = 454,390.23
  5. Step 5: Solve for x
    x = 454,390.23/561.04
  6. Step 6: Final answer
    x = 809.91

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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.