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Finding the Fourth Proportional to 1,687.61, 2,531.43 and 592.76

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Solution

The fourth proportional to 1,687.61, 2,531.43 and 592.76 is: 889.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.61 : 2,531.43 = 592.76 : x
  2. Step 2: Convert to fraction form
    1,687.61/2,531.43 = 592.76/x
  3. Step 3: Cross multiply
    1,687.61x = 2,531.43 × 592.76
  4. Step 4: Simplify right side
    1,687.61x = 1,500,530.45
  5. Step 5: Solve for x
    x = 1,500,530.45/1,687.61
  6. Step 6: Final answer
    x = 889.15

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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.