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Finding the Fourth Proportional to 384.76, 530.94 and 243.07

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Solution

The fourth proportional to 384.76, 530.94 and 243.07 is: 335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.76 : 530.94 = 243.07 : x
  2. Step 2: Convert to fraction form
    384.76/530.94 = 243.07/x
  3. Step 3: Cross multiply
    384.76x = 530.94 × 243.07
  4. Step 4: Simplify right side
    384.76x = 129,055.59
  5. Step 5: Solve for x
    x = 129,055.59/384.76
  6. Step 6: Final answer
    x = 335.42

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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.