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Finding the Fourth Proportional to 1,689.71, 2,534.57 and 535.46

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Solution

The fourth proportional to 1,689.71, 2,534.57 and 535.46 is: 803.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.71 : 2,534.57 = 535.46 : x
  2. Step 2: Convert to fraction form
    1,689.71/2,534.57 = 535.46/x
  3. Step 3: Cross multiply
    1,689.71x = 2,534.57 × 535.46
  4. Step 4: Simplify right side
    1,689.71x = 1,357,160.85
  5. Step 5: Solve for x
    x = 1,357,160.85/1,689.71
  6. Step 6: Final answer
    x = 803.19

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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.