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Finding the Fourth Proportional to 1,260.11, 1,890.24 and 529.74

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Solution

The fourth proportional to 1,260.11, 1,890.24 and 529.74 is: 794.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.11 : 1,890.24 = 529.74 : x
  2. Step 2: Convert to fraction form
    1,260.11/1,890.24 = 529.74/x
  3. Step 3: Cross multiply
    1,260.11x = 1,890.24 × 529.74
  4. Step 4: Simplify right side
    1,260.11x = 1,001,333.75
  5. Step 5: Solve for x
    x = 1,001,333.75/1,260.11
  6. Step 6: Final answer
    x = 794.64

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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.