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Finding the Fourth Proportional to 1,668.51, 2,501.92 and 557.53

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Solution

The fourth proportional to 1,668.51, 2,501.92 and 557.53 is: 836.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.51 : 2,501.92 = 557.53 : x
  2. Step 2: Convert to fraction form
    1,668.51/2,501.92 = 557.53/x
  3. Step 3: Cross multiply
    1,668.51x = 2,501.92 × 557.53
  4. Step 4: Simplify right side
    1,668.51x = 1,394,889.90
  5. Step 5: Solve for x
    x = 1,394,889.90/1,668.51
  6. Step 6: Final answer
    x = 836.01

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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.