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Finding the Fourth Proportional to 1,013.29, 1,520.20 and 364.03

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Solution

The fourth proportional to 1,013.29, 1,520.20 and 364.03 is: 546.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.29 : 1,520.20 = 364.03 : x
  2. Step 2: Convert to fraction form
    1,013.29/1,520.20 = 364.03/x
  3. Step 3: Cross multiply
    1,013.29x = 1,520.20 × 364.03
  4. Step 4: Simplify right side
    1,013.29x = 553,398.41
  5. Step 5: Solve for x
    x = 553,398.41/1,013.29
  6. Step 6: Final answer
    x = 546.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.