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Finding the Fourth Proportional to 717.03, 1,075.13 and 305.96

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Solution

The fourth proportional to 717.03, 1,075.13 and 305.96 is: 458.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.03 : 1,075.13 = 305.96 : x
  2. Step 2: Convert to fraction form
    717.03/1,075.13 = 305.96/x
  3. Step 3: Cross multiply
    717.03x = 1,075.13 × 305.96
  4. Step 4: Simplify right side
    717.03x = 328,939.87
  5. Step 5: Solve for x
    x = 328,939.87/717.03
  6. Step 6: Final answer
    x = 458.75

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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.