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Finding the Fourth Proportional to 581.24, 871.98 and 429.16

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Solution

The fourth proportional to 581.24, 871.98 and 429.16 is: 643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.24 : 871.98 = 429.16 : x
  2. Step 2: Convert to fraction form
    581.24/871.98 = 429.16/x
  3. Step 3: Cross multiply
    581.24x = 871.98 × 429.16
  4. Step 4: Simplify right side
    581.24x = 374,218.94
  5. Step 5: Solve for x
    x = 374,218.94/581.24
  6. Step 6: Final answer
    x = 643.83

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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.