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Finding the Fourth Proportional to 592.12, 886.89 and 429.45

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Solution

The fourth proportional to 592.12, 886.89 and 429.45 is: 643.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.12 : 886.89 = 429.45 : x
  2. Step 2: Convert to fraction form
    592.12/886.89 = 429.45/x
  3. Step 3: Cross multiply
    592.12x = 886.89 × 429.45
  4. Step 4: Simplify right side
    592.12x = 380,874.91
  5. Step 5: Solve for x
    x = 380,874.91/592.12
  6. Step 6: Final answer
    x = 643.24

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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.