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Finding the Fourth Proportional to 1,145.73, 1,718.28 and 529.73

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Solution

The fourth proportional to 1,145.73, 1,718.28 and 529.73 is: 794.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.73 : 1,718.28 = 529.73 : x
  2. Step 2: Convert to fraction form
    1,145.73/1,718.28 = 529.73/x
  3. Step 3: Cross multiply
    1,145.73x = 1,718.28 × 529.73
  4. Step 4: Simplify right side
    1,145.73x = 910,215.87
  5. Step 5: Solve for x
    x = 910,215.87/1,145.73
  6. Step 6: Final answer
    x = 794.44

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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.