Home / 1,432.37-2,148.55-458.55

Finding the Fourth Proportional to 1,432.37, 2,148.55 and 458.55

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Solution

The fourth proportional to 1,432.37, 2,148.55 and 458.55 is: 687.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.37 : 2,148.55 = 458.55 : x
  2. Step 2: Convert to fraction form
    1,432.37/2,148.55 = 458.55/x
  3. Step 3: Cross multiply
    1,432.37x = 2,148.55 × 458.55
  4. Step 4: Simplify right side
    1,432.37x = 985,217.60
  5. Step 5: Solve for x
    x = 985,217.60/1,432.37
  6. Step 6: Final answer
    x = 687.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.