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Finding the Fourth Proportional to 438.22, 603.48 and 429.11

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Solution

The fourth proportional to 438.22, 603.48 and 429.11 is: 590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.22 : 603.48 = 429.11 : x
  2. Step 2: Convert to fraction form
    438.22/603.48 = 429.11/x
  3. Step 3: Cross multiply
    438.22x = 603.48 × 429.11
  4. Step 4: Simplify right side
    438.22x = 258,960.16
  5. Step 5: Solve for x
    x = 258,960.16/438.22
  6. Step 6: Final answer
    x = 590.93

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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.