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Finding the Fourth Proportional to 1,013.54, 1,520.38 and 355.34

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Solution

The fourth proportional to 1,013.54, 1,520.38 and 355.34 is: 533.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.54 : 1,520.38 = 355.34 : x
  2. Step 2: Convert to fraction form
    1,013.54/1,520.38 = 355.34/x
  3. Step 3: Cross multiply
    1,013.54x = 1,520.38 × 355.34
  4. Step 4: Simplify right side
    1,013.54x = 540,242.45
  5. Step 5: Solve for x
    x = 540,242.45/1,013.54
  6. Step 6: Final answer
    x = 533.03

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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.