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Finding the Fourth Proportional to 619.88, 852.90 and 602.63

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Solution

The fourth proportional to 619.88, 852.90 and 602.63 is: 829.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.88 : 852.90 = 602.63 : x
  2. Step 2: Convert to fraction form
    619.88/852.90 = 602.63/x
  3. Step 3: Cross multiply
    619.88x = 852.90 × 602.63
  4. Step 4: Simplify right side
    619.88x = 513,983.13
  5. Step 5: Solve for x
    x = 513,983.13/619.88
  6. Step 6: Final answer
    x = 829.17

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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.