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Finding the Fourth Proportional to 1,543.30, 2,314.88 and 619.26

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Solution

The fourth proportional to 1,543.30, 2,314.88 and 619.26 is: 928.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.30 : 2,314.88 = 619.26 : x
  2. Step 2: Convert to fraction form
    1,543.30/2,314.88 = 619.26/x
  3. Step 3: Cross multiply
    1,543.30x = 2,314.88 × 619.26
  4. Step 4: Simplify right side
    1,543.30x = 1,433,512.59
  5. Step 5: Solve for x
    x = 1,433,512.59/1,543.30
  6. Step 6: Final answer
    x = 928.86

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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.