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Finding the Fourth Proportional to 615.51, 922.05 and 372.51

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Solution

The fourth proportional to 615.51, 922.05 and 372.51 is: 558.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.51 : 922.05 = 372.51 : x
  2. Step 2: Convert to fraction form
    615.51/922.05 = 372.51/x
  3. Step 3: Cross multiply
    615.51x = 922.05 × 372.51
  4. Step 4: Simplify right side
    615.51x = 343,472.85
  5. Step 5: Solve for x
    x = 343,472.85/615.51
  6. Step 6: Final answer
    x = 558.03

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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.