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Finding the Fourth Proportional to 436.46, 651.69 and 384.68

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Solution

The fourth proportional to 436.46, 651.69 and 384.68 is: 574.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.46 : 651.69 = 384.68 : x
  2. Step 2: Convert to fraction form
    436.46/651.69 = 384.68/x
  3. Step 3: Cross multiply
    436.46x = 651.69 × 384.68
  4. Step 4: Simplify right side
    436.46x = 250,693.74
  5. Step 5: Solve for x
    x = 250,693.74/436.46
  6. Step 6: Final answer
    x = 574.39

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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.