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Finding the Fourth Proportional to 1,927.50, 2,890.84 and 540.98

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Solution

The fourth proportional to 1,927.50, 2,890.84 and 540.98 is: 811.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.50 : 2,890.84 = 540.98 : x
  2. Step 2: Convert to fraction form
    1,927.50/2,890.84 = 540.98/x
  3. Step 3: Cross multiply
    1,927.50x = 2,890.84 × 540.98
  4. Step 4: Simplify right side
    1,927.50x = 1,563,882.67
  5. Step 5: Solve for x
    x = 1,563,882.67/1,927.50
  6. Step 6: Final answer
    x = 811.35

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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.