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Finding the Fourth Proportional to 293.35, 438.72 and 261.08

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Solution

The fourth proportional to 293.35, 438.72 and 261.08 is: 390.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.35 : 438.72 = 261.08 : x
  2. Step 2: Convert to fraction form
    293.35/438.72 = 261.08/x
  3. Step 3: Cross multiply
    293.35x = 438.72 × 261.08
  4. Step 4: Simplify right side
    293.35x = 114,541.02
  5. Step 5: Solve for x
    x = 114,541.02/293.35
  6. Step 6: Final answer
    x = 390.46

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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.