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Finding the Fourth Proportional to 1,013.30, 1,519.95 and 282.89

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Solution

The fourth proportional to 1,013.30, 1,519.95 and 282.89 is: 424.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.30 : 1,519.95 = 282.89 : x
  2. Step 2: Convert to fraction form
    1,013.30/1,519.95 = 282.89/x
  3. Step 3: Cross multiply
    1,013.30x = 1,519.95 × 282.89
  4. Step 4: Simplify right side
    1,013.30x = 429,981.39
  5. Step 5: Solve for x
    x = 429,981.39/1,013.30
  6. Step 6: Final answer
    x = 424.34

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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.