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Finding the Fourth Proportional to 1,695.60, 2,543.40 and 541.36

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Solution

The fourth proportional to 1,695.60, 2,543.40 and 541.36 is: 812.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.60 : 2,543.40 = 541.36 : x
  2. Step 2: Convert to fraction form
    1,695.60/2,543.40 = 541.36/x
  3. Step 3: Cross multiply
    1,695.60x = 2,543.40 × 541.36
  4. Step 4: Simplify right side
    1,695.60x = 1,376,895.02
  5. Step 5: Solve for x
    x = 1,376,895.02/1,695.60
  6. Step 6: Final answer
    x = 812.04

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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.