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Finding the Fourth Proportional to 560.80, 836.60 and 511.84

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Solution

The fourth proportional to 560.80, 836.60 and 511.84 is: 763.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.80 : 836.60 = 511.84 : x
  2. Step 2: Convert to fraction form
    560.80/836.60 = 511.84/x
  3. Step 3: Cross multiply
    560.80x = 836.60 × 511.84
  4. Step 4: Simplify right side
    560.80x = 428,205.34
  5. Step 5: Solve for x
    x = 428,205.34/560.80
  6. Step 6: Final answer
    x = 763.56

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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.