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Finding the Fourth Proportional to 675.08, 930.51 and 488.57

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Solution

The fourth proportional to 675.08, 930.51 and 488.57 is: 673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.08 : 930.51 = 488.57 : x
  2. Step 2: Convert to fraction form
    675.08/930.51 = 488.57/x
  3. Step 3: Cross multiply
    675.08x = 930.51 × 488.57
  4. Step 4: Simplify right side
    675.08x = 454,621.60
  5. Step 5: Solve for x
    x = 454,621.60/675.08
  6. Step 6: Final answer
    x = 673.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.