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Finding the Fourth Proportional to 1,695.59, 2,543.52 and 655.55

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Solution

The fourth proportional to 1,695.59, 2,543.52 and 655.55 is: 983.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.59 : 2,543.52 = 655.55 : x
  2. Step 2: Convert to fraction form
    1,695.59/2,543.52 = 655.55/x
  3. Step 3: Cross multiply
    1,695.59x = 2,543.52 × 655.55
  4. Step 4: Simplify right side
    1,695.59x = 1,667,391.82
  5. Step 5: Solve for x
    x = 1,667,391.82/1,695.59
  6. Step 6: Final answer
    x = 983.37

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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.