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Finding the Fourth Proportional to 424.94, 634.90 and 374.18

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Solution

The fourth proportional to 424.94, 634.90 and 374.18 is: 559.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.94 : 634.90 = 374.18 : x
  2. Step 2: Convert to fraction form
    424.94/634.90 = 374.18/x
  3. Step 3: Cross multiply
    424.94x = 634.90 × 374.18
  4. Step 4: Simplify right side
    424.94x = 237,562.77
  5. Step 5: Solve for x
    x = 237,562.77/424.94
  6. Step 6: Final answer
    x = 559.06

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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.