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Finding the Fourth Proportional to 614, 921.48 and 357.68

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Solution

The fourth proportional to 614, 921.48 and 357.68 is: 536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    614 : 921.48 = 357.68 : x
  2. Step 2: Convert to fraction form
    614/921.48 = 357.68/x
  3. Step 3: Cross multiply
    614x = 921.48 × 357.68
  4. Step 4: Simplify right side
    614x = 329,594.97
  5. Step 5: Solve for x
    x = 329,594.97/614
  6. Step 6: Final answer
    x = 536.80

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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.