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Finding the Fourth Proportional to 384.69, 530.73 and 252.08

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Solution

The fourth proportional to 384.69, 530.73 and 252.08 is: 347.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.69 : 530.73 = 252.08 : x
  2. Step 2: Convert to fraction form
    384.69/530.73 = 252.08/x
  3. Step 3: Cross multiply
    384.69x = 530.73 × 252.08
  4. Step 4: Simplify right side
    384.69x = 133,783.76
  5. Step 5: Solve for x
    x = 133,783.76/384.69
  6. Step 6: Final answer
    x = 347.77

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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.