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Finding the Fourth Proportional to 1,580.51, 2,370.85 and 540.47

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Solution

The fourth proportional to 1,580.51, 2,370.85 and 540.47 is: 810.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.51 : 2,370.85 = 540.47 : x
  2. Step 2: Convert to fraction form
    1,580.51/2,370.85 = 540.47/x
  3. Step 3: Cross multiply
    1,580.51x = 2,370.85 × 540.47
  4. Step 4: Simplify right side
    1,580.51x = 1,281,377.88
  5. Step 5: Solve for x
    x = 1,281,377.88/1,580.51
  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.