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Finding the Fourth Proportional to 298.86, 444.68 and 291.42

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Solution

The fourth proportional to 298.86, 444.68 and 291.42 is: 433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.86 : 444.68 = 291.42 : x
  2. Step 2: Convert to fraction form
    298.86/444.68 = 291.42/x
  3. Step 3: Cross multiply
    298.86x = 444.68 × 291.42
  4. Step 4: Simplify right side
    298.86x = 129,587.19
  5. Step 5: Solve for x
    x = 129,587.19/298.86
  6. Step 6: Final answer
    x = 433.60

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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.