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Finding the Fourth Proportional to 295.91, 407.45 and 243.26

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Solution

The fourth proportional to 295.91, 407.45 and 243.26 is: 334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.91 : 407.45 = 243.26 : x
  2. Step 2: Convert to fraction form
    295.91/407.45 = 243.26/x
  3. Step 3: Cross multiply
    295.91x = 407.45 × 243.26
  4. Step 4: Simplify right side
    295.91x = 99,115.02
  5. Step 5: Solve for x
    x = 99,115.02/295.91
  6. Step 6: Final answer
    x = 334.95

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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.