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Finding the Fourth Proportional to 400.46, 552.25 and 384.66

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Solution

The fourth proportional to 400.46, 552.25 and 384.66 is: 530.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.46 : 552.25 = 384.66 : x
  2. Step 2: Convert to fraction form
    400.46/552.25 = 384.66/x
  3. Step 3: Cross multiply
    400.46x = 552.25 × 384.66
  4. Step 4: Simplify right side
    400.46x = 212,428.97
  5. Step 5: Solve for x
    x = 212,428.97/400.46
  6. Step 6: Final answer
    x = 530.47

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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.