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Finding the Fourth Proportional to 1,145.38, 1,717.86 and 529.03

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Solution

The fourth proportional to 1,145.38, 1,717.86 and 529.03 is: 793.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.38 : 1,717.86 = 529.03 : x
  2. Step 2: Convert to fraction form
    1,145.38/1,717.86 = 529.03/x
  3. Step 3: Cross multiply
    1,145.38x = 1,717.86 × 529.03
  4. Step 4: Simplify right side
    1,145.38x = 908,795.18
  5. Step 5: Solve for x
    x = 908,795.18/1,145.38
  6. Step 6: Final answer
    x = 793.45

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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.