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Finding the Fourth Proportional to 295.52, 407.68 and 207.20

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Solution

The fourth proportional to 295.52, 407.68 and 207.20 is: 285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.52 : 407.68 = 207.20 : x
  2. Step 2: Convert to fraction form
    295.52/407.68 = 207.20/x
  3. Step 3: Cross multiply
    295.52x = 407.68 × 207.20
  4. Step 4: Simplify right side
    295.52x = 84,471.80
  5. Step 5: Solve for x
    x = 84,471.80/295.52
  6. Step 6: Final answer
    x = 285.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.