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Finding the Fourth Proportional to 1,580.50, 2,370.89 and 540.46

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Solution

The fourth proportional to 1,580.50, 2,370.89 and 540.46 is: 810.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.50 : 2,370.89 = 540.46 : x
  2. Step 2: Convert to fraction form
    1,580.50/2,370.89 = 540.46/x
  3. Step 3: Cross multiply
    1,580.50x = 2,370.89 × 540.46
  4. Step 4: Simplify right side
    1,580.50x = 1,281,371.21
  5. Step 5: Solve for x
    x = 1,281,371.21/1,580.50
  6. Step 6: Final answer
    x = 810.74

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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.