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Finding the Fourth Proportional to 1,695.27, 2,543.29 and 655.28

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Solution

The fourth proportional to 1,695.27, 2,543.29 and 655.28 is: 983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.27 : 2,543.29 = 655.28 : x
  2. Step 2: Convert to fraction form
    1,695.27/2,543.29 = 655.28/x
  3. Step 3: Cross multiply
    1,695.27x = 2,543.29 × 655.28
  4. Step 4: Simplify right side
    1,695.27x = 1,666,554.35
  5. Step 5: Solve for x
    x = 1,666,554.35/1,695.27
  6. Step 6: Final answer
    x = 983.06

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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.