Home / 1,432.08-2,148.42-458.25

Finding the Fourth Proportional to 1,432.08, 2,148.42 and 458.25

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Solution

The fourth proportional to 1,432.08, 2,148.42 and 458.25 is: 687.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.08 : 2,148.42 = 458.25 : x
  2. Step 2: Convert to fraction form
    1,432.08/2,148.42 = 458.25/x
  3. Step 3: Cross multiply
    1,432.08x = 2,148.42 × 458.25
  4. Step 4: Simplify right side
    1,432.08x = 984,513.47
  5. Step 5: Solve for x
    x = 984,513.47/1,432.08
  6. Step 6: Final answer
    x = 687.47

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1.5x scale

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.