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Finding the Fourth Proportional to 488.57, 672.53 and 426.29

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Solution

The fourth proportional to 488.57, 672.53 and 426.29 is: 586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.57 : 672.53 = 426.29 : x
  2. Step 2: Convert to fraction form
    488.57/672.53 = 426.29/x
  3. Step 3: Cross multiply
    488.57x = 672.53 × 426.29
  4. Step 4: Simplify right side
    488.57x = 286,692.36
  5. Step 5: Solve for x
    x = 286,692.36/488.57
  6. Step 6: Final answer
    x = 586.80

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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.