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Finding the Fourth Proportional to 850.98, 1,174.10 and 515.04

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Solution

The fourth proportional to 850.98, 1,174.10 and 515.04 is: 710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.98 : 1,174.10 = 515.04 : x
  2. Step 2: Convert to fraction form
    850.98/1,174.10 = 515.04/x
  3. Step 3: Cross multiply
    850.98x = 1,174.10 × 515.04
  4. Step 4: Simplify right side
    850.98x = 604,708.46
  5. Step 5: Solve for x
    x = 604,708.46/850.98
  6. Step 6: Final answer
    x = 710.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.