Home / 1,445.37-2,167.88-458.18

Finding the Fourth Proportional to 1,445.37, 2,167.88 and 458.18

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Solution

The fourth proportional to 1,445.37, 2,167.88 and 458.18 is: 687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.37 : 2,167.88 = 458.18 : x
  2. Step 2: Convert to fraction form
    1,445.37/2,167.88 = 458.18/x
  3. Step 3: Cross multiply
    1,445.37x = 2,167.88 × 458.18
  4. Step 4: Simplify right side
    1,445.37x = 993,274.26
  5. Step 5: Solve for x
    x = 993,274.26/1,445.37
  6. Step 6: Final answer
    x = 687.21

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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.