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Finding the Fourth Proportional to 1,007.79, 1,512.45 and 452.67

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Solution

The fourth proportional to 1,007.79, 1,512.45 and 452.67 is: 679.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007.79 : 1,512.45 = 452.67 : x
  2. Step 2: Convert to fraction form
    1,007.79/1,512.45 = 452.67/x
  3. Step 3: Cross multiply
    1,007.79x = 1,512.45 × 452.67
  4. Step 4: Simplify right side
    1,007.79x = 684,640.74
  5. Step 5: Solve for x
    x = 684,640.74/1,007.79
  6. Step 6: Final answer
    x = 679.35

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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.