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Finding the Fourth Proportional to 1,007.42, 1,511.33 and 358.07

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Solution

The fourth proportional to 1,007.42, 1,511.33 and 358.07 is: 537.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007.42 : 1,511.33 = 358.07 : x
  2. Step 2: Convert to fraction form
    1,007.42/1,511.33 = 358.07/x
  3. Step 3: Cross multiply
    1,007.42x = 1,511.33 × 358.07
  4. Step 4: Simplify right side
    1,007.42x = 541,161.93
  5. Step 5: Solve for x
    x = 541,161.93/1,007.42
  6. Step 6: Final answer
    x = 537.18

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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.