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Finding the Fourth Proportional to 555.36, 833.12 and 298.72

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Solution

The fourth proportional to 555.36, 833.12 and 298.72 is: 448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.36 : 833.12 = 298.72 : x
  2. Step 2: Convert to fraction form
    555.36/833.12 = 298.72/x
  3. Step 3: Cross multiply
    555.36x = 833.12 × 298.72
  4. Step 4: Simplify right side
    555.36x = 248,869.61
  5. Step 5: Solve for x
    x = 248,869.61/555.36
  6. Step 6: Final answer
    x = 448.12

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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.