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Finding the Fourth Proportional to 716.52, 1,075.18 and 392.04

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Solution

The fourth proportional to 716.52, 1,075.18 and 392.04 is: 588.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.52 : 1,075.18 = 392.04 : x
  2. Step 2: Convert to fraction form
    716.52/1,075.18 = 392.04/x
  3. Step 3: Cross multiply
    716.52x = 1,075.18 × 392.04
  4. Step 4: Simplify right side
    716.52x = 421,513.57
  5. Step 5: Solve for x
    x = 421,513.57/716.52
  6. Step 6: Final answer
    x = 588.28

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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.