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Finding the Fourth Proportional to 294.24, 438.48 and 276.90

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Solution

The fourth proportional to 294.24, 438.48 and 276.90 is: 412.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.24 : 438.48 = 276.90 : x
  2. Step 2: Convert to fraction form
    294.24/438.48 = 276.90/x
  3. Step 3: Cross multiply
    294.24x = 438.48 × 276.90
  4. Step 4: Simplify right side
    294.24x = 121,415.11
  5. Step 5: Solve for x
    x = 121,415.11/294.24
  6. Step 6: Final answer
    x = 412.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.