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Finding the Fourth Proportional to 485.24, 724.37 and 453.24

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Solution

The fourth proportional to 485.24, 724.37 and 453.24 is: 676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.24 : 724.37 = 453.24 : x
  2. Step 2: Convert to fraction form
    485.24/724.37 = 453.24/x
  3. Step 3: Cross multiply
    485.24x = 724.37 × 453.24
  4. Step 4: Simplify right side
    485.24x = 328,311.19
  5. Step 5: Solve for x
    x = 328,311.19/485.24
  6. Step 6: Final answer
    x = 676.60

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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.