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Finding the Fourth Proportional to 1,888.50, 2,832.60 and 501.78

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Solution

The fourth proportional to 1,888.50, 2,832.60 and 501.78 is: 752.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.50 : 2,832.60 = 501.78 : x
  2. Step 2: Convert to fraction form
    1,888.50/2,832.60 = 501.78/x
  3. Step 3: Cross multiply
    1,888.50x = 2,832.60 × 501.78
  4. Step 4: Simplify right side
    1,888.50x = 1,421,342.03
  5. Step 5: Solve for x
    x = 1,421,342.03/1,888.50
  6. Step 6: Final answer
    x = 752.63

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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.