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Finding the Fourth Proportional to 770.17, 1,062.72 and 451.04

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Solution

The fourth proportional to 770.17, 1,062.72 and 451.04 is: 622.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.17 : 1,062.72 = 451.04 : x
  2. Step 2: Convert to fraction form
    770.17/1,062.72 = 451.04/x
  3. Step 3: Cross multiply
    770.17x = 1,062.72 × 451.04
  4. Step 4: Simplify right side
    770.17x = 479,329.23
  5. Step 5: Solve for x
    x = 479,329.23/770.17
  6. Step 6: Final answer
    x = 622.37

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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.