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Finding the Fourth Proportional to 384.44, 530.11 and 259.89

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Solution

The fourth proportional to 384.44, 530.11 and 259.89 is: 358.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.44 : 530.11 = 259.89 : x
  2. Step 2: Convert to fraction form
    384.44/530.11 = 259.89/x
  3. Step 3: Cross multiply
    384.44x = 530.11 × 259.89
  4. Step 4: Simplify right side
    384.44x = 137,766.34
  5. Step 5: Solve for x
    x = 137,766.34/384.44
  6. Step 6: Final answer
    x = 358.36

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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.