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Finding the Fourth Proportional to 384.54, 530.46 and 322.44

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Solution

The fourth proportional to 384.54, 530.46 and 322.44 is: 444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.54 : 530.46 = 322.44 : x
  2. Step 2: Convert to fraction form
    384.54/530.46 = 322.44/x
  3. Step 3: Cross multiply
    384.54x = 530.46 × 322.44
  4. Step 4: Simplify right side
    384.54x = 171,041.52
  5. Step 5: Solve for x
    x = 171,041.52/384.54
  6. Step 6: Final answer
    x = 444.80

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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.