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Finding the Fourth Proportional to 384.84, 530.70 and 329.46

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Solution

The fourth proportional to 384.84, 530.70 and 329.46 is: 454.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.84 : 530.70 = 329.46 : x
  2. Step 2: Convert to fraction form
    384.84/530.70 = 329.46/x
  3. Step 3: Cross multiply
    384.84x = 530.70 × 329.46
  4. Step 4: Simplify right side
    384.84x = 174,844.42
  5. Step 5: Solve for x
    x = 174,844.42/384.84
  6. Step 6: Final answer
    x = 454.33

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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.