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Finding the Fourth Proportional to 598.91, 898.66 and 426.07

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Solution

The fourth proportional to 598.91, 898.66 and 426.07 is: 639.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    598.91 : 898.66 = 426.07 : x
  2. Step 2: Convert to fraction form
    598.91/898.66 = 426.07/x
  3. Step 3: Cross multiply
    598.91x = 898.66 × 426.07
  4. Step 4: Simplify right side
    598.91x = 382,893.72
  5. Step 5: Solve for x
    x = 382,893.72/598.91
  6. Step 6: Final answer
    x = 639.32

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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.