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Finding the Fourth Proportional to 472.63, 702.77 and 453.19

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Solution

The fourth proportional to 472.63, 702.77 and 453.19 is: 673.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.63 : 702.77 = 453.19 : x
  2. Step 2: Convert to fraction form
    472.63/702.77 = 453.19/x
  3. Step 3: Cross multiply
    472.63x = 702.77 × 453.19
  4. Step 4: Simplify right side
    472.63x = 318,488.34
  5. Step 5: Solve for x
    x = 318,488.34/472.63
  6. Step 6: Final answer
    x = 673.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.