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Finding the Fourth Proportional to 898.66, 1,348.47 and 411.94

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Solution

The fourth proportional to 898.66, 1,348.47 and 411.94 is: 618.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.66 : 1,348.47 = 411.94 : x
  2. Step 2: Convert to fraction form
    898.66/1,348.47 = 411.94/x
  3. Step 3: Cross multiply
    898.66x = 1,348.47 × 411.94
  4. Step 4: Simplify right side
    898.66x = 555,488.73
  5. Step 5: Solve for x
    x = 555,488.73/898.66
  6. Step 6: Final answer
    x = 618.13

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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.