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Finding the Fourth Proportional to 485.48, 667.50 and 432.53

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Solution

The fourth proportional to 485.48, 667.50 and 432.53 is: 594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.48 : 667.50 = 432.53 : x
  2. Step 2: Convert to fraction form
    485.48/667.50 = 432.53/x
  3. Step 3: Cross multiply
    485.48x = 667.50 × 432.53
  4. Step 4: Simplify right side
    485.48x = 288,713.78
  5. Step 5: Solve for x
    x = 288,713.78/485.48
  6. Step 6: Final answer
    x = 594.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.