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Finding the Fourth Proportional to 618.59, 928.06 and 293.51

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Solution

The fourth proportional to 618.59, 928.06 and 293.51 is: 440.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.59 : 928.06 = 293.51 : x
  2. Step 2: Convert to fraction form
    618.59/928.06 = 293.51/x
  3. Step 3: Cross multiply
    618.59x = 928.06 × 293.51
  4. Step 4: Simplify right side
    618.59x = 272,394.89
  5. Step 5: Solve for x
    x = 272,394.89/618.59
  6. Step 6: Final answer
    x = 440.35

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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.