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Finding the Fourth Proportional to 384.84, 530.31 and 273.99

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Solution

The fourth proportional to 384.84, 530.31 and 273.99 is: 377.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.84 : 530.31 = 273.99 : x
  2. Step 2: Convert to fraction form
    384.84/530.31 = 273.99/x
  3. Step 3: Cross multiply
    384.84x = 530.31 × 273.99
  4. Step 4: Simplify right side
    384.84x = 145,299.64
  5. Step 5: Solve for x
    x = 145,299.64/384.84
  6. Step 6: Final answer
    x = 377.56

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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.