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Finding the Fourth Proportional to 559.92, 764.88 and 556.32

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Solution

The fourth proportional to 559.92, 764.88 and 556.32 is: 759.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.92 : 764.88 = 556.32 : x
  2. Step 2: Convert to fraction form
    559.92/764.88 = 556.32/x
  3. Step 3: Cross multiply
    559.92x = 764.88 × 556.32
  4. Step 4: Simplify right side
    559.92x = 425,518.04
  5. Step 5: Solve for x
    x = 425,518.04/559.92
  6. Step 6: Final answer
    x = 759.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.