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Finding the Fourth Proportional to 1,624.42, 2,436.38 and 528.78

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Solution

The fourth proportional to 1,624.42, 2,436.38 and 528.78 is: 793.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.42 : 2,436.38 = 528.78 : x
  2. Step 2: Convert to fraction form
    1,624.42/2,436.38 = 528.78/x
  3. Step 3: Cross multiply
    1,624.42x = 2,436.38 × 528.78
  4. Step 4: Simplify right side
    1,624.42x = 1,288,297.24
  5. Step 5: Solve for x
    x = 1,288,297.24/1,624.42
  6. Step 6: Final answer
    x = 793.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.