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Finding the Fourth Proportional to 438.19, 604.59 and 298.06

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Solution

The fourth proportional to 438.19, 604.59 and 298.06 is: 411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.19 : 604.59 = 298.06 : x
  2. Step 2: Convert to fraction form
    438.19/604.59 = 298.06/x
  3. Step 3: Cross multiply
    438.19x = 604.59 × 298.06
  4. Step 4: Simplify right side
    438.19x = 180,204.10
  5. Step 5: Solve for x
    x = 180,204.10/438.19
  6. Step 6: Final answer
    x = 411.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.