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Finding the Fourth Proportional to 436.32, 651.84 and 349.86

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Solution

The fourth proportional to 436.32, 651.84 and 349.86 is: 522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.32 : 651.84 = 349.86 : x
  2. Step 2: Convert to fraction form
    436.32/651.84 = 349.86/x
  3. Step 3: Cross multiply
    436.32x = 651.84 × 349.86
  4. Step 4: Simplify right side
    436.32x = 228,052.74
  5. Step 5: Solve for x
    x = 228,052.74/436.32
  6. Step 6: Final answer
    x = 522.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.