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Finding the Fourth Proportional to 1,761.79, 2,643.18 and 529.24

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Solution

The fourth proportional to 1,761.79, 2,643.18 and 529.24 is: 794.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.79 : 2,643.18 = 529.24 : x
  2. Step 2: Convert to fraction form
    1,761.79/2,643.18 = 529.24/x
  3. Step 3: Cross multiply
    1,761.79x = 2,643.18 × 529.24
  4. Step 4: Simplify right side
    1,761.79x = 1,398,863.37
  5. Step 5: Solve for x
    x = 1,398,863.37/1,761.79
  6. Step 6: Final answer
    x = 794.00

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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.