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Finding the Fourth Proportional to 561.12, 836.04 and 555.84

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Solution

The fourth proportional to 561.12, 836.04 and 555.84 is: 828.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.12 : 836.04 = 555.84 : x
  2. Step 2: Convert to fraction form
    561.12/836.04 = 555.84/x
  3. Step 3: Cross multiply
    561.12x = 836.04 × 555.84
  4. Step 4: Simplify right side
    561.12x = 464,704.47
  5. Step 5: Solve for x
    x = 464,704.47/561.12
  6. Step 6: Final answer
    x = 828.17

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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.