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Finding the Fourth Proportional to 1,353.86, 2,031.53 and 574.30

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Solution

The fourth proportional to 1,353.86, 2,031.53 and 574.30 is: 861.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.86 : 2,031.53 = 574.30 : x
  2. Step 2: Convert to fraction form
    1,353.86/2,031.53 = 574.30/x
  3. Step 3: Cross multiply
    1,353.86x = 2,031.53 × 574.30
  4. Step 4: Simplify right side
    1,353.86x = 1,166,699.73
  5. Step 5: Solve for x
    x = 1,166,699.73/1,353.86
  6. Step 6: Final answer
    x = 861.76

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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.