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Finding the Fourth Proportional to 791.08, 1,185.45 and 530.17

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Solution

The fourth proportional to 791.08, 1,185.45 and 530.17 is: 794.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.08 : 1,185.45 = 530.17 : x
  2. Step 2: Convert to fraction form
    791.08/1,185.45 = 530.17/x
  3. Step 3: Cross multiply
    791.08x = 1,185.45 × 530.17
  4. Step 4: Simplify right side
    791.08x = 628,490.03
  5. Step 5: Solve for x
    x = 628,490.03/791.08
  6. Step 6: Final answer
    x = 794.47

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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.