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Finding the Fourth Proportional to 614.84, 921.94 and 290.12

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Solution

The fourth proportional to 614.84, 921.94 and 290.12 is: 435.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.84 : 921.94 = 290.12 : x
  2. Step 2: Convert to fraction form
    614.84/921.94 = 290.12/x
  3. Step 3: Cross multiply
    614.84x = 921.94 × 290.12
  4. Step 4: Simplify right side
    614.84x = 267,473.23
  5. Step 5: Solve for x
    x = 267,473.23/614.84
  6. Step 6: Final answer
    x = 435.03

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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.