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Finding the Fourth Proportional to 1,260.49, 1,890.73 and 530.88

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Solution

The fourth proportional to 1,260.49, 1,890.73 and 530.88 is: 796.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.49 : 1,890.73 = 530.88 : x
  2. Step 2: Convert to fraction form
    1,260.49/1,890.73 = 530.88/x
  3. Step 3: Cross multiply
    1,260.49x = 1,890.73 × 530.88
  4. Step 4: Simplify right side
    1,260.49x = 1,003,750.74
  5. Step 5: Solve for x
    x = 1,003,750.74/1,260.49
  6. Step 6: Final answer
    x = 796.32

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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.