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Finding the Fourth Proportional to 354.68, 489.25 and 295.38

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Solution

The fourth proportional to 354.68, 489.25 and 295.38 is: 407.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.68 : 489.25 = 295.38 : x
  2. Step 2: Convert to fraction form
    354.68/489.25 = 295.38/x
  3. Step 3: Cross multiply
    354.68x = 489.25 × 295.38
  4. Step 4: Simplify right side
    354.68x = 144,514.67
  5. Step 5: Solve for x
    x = 144,514.67/354.68
  6. Step 6: Final answer
    x = 407.45

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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.