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Finding the Fourth Proportional to 298.01, 447.51 and 285.02

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Solution

The fourth proportional to 298.01, 447.51 and 285.02 is: 428.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.01 : 447.51 = 285.02 : x
  2. Step 2: Convert to fraction form
    298.01/447.51 = 285.02/x
  3. Step 3: Cross multiply
    298.01x = 447.51 × 285.02
  4. Step 4: Simplify right side
    298.01x = 127,547.06
  5. Step 5: Solve for x
    x = 127,547.06/298.01
  6. Step 6: Final answer
    x = 428.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.