Home / 1,554.12-2,331.45-458.55

Finding the Fourth Proportional to 1,554.12, 2,331.45 and 458.55

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Solution

The fourth proportional to 1,554.12, 2,331.45 and 458.55 is: 687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.12 : 2,331.45 = 458.55 : x
  2. Step 2: Convert to fraction form
    1,554.12/2,331.45 = 458.55/x
  3. Step 3: Cross multiply
    1,554.12x = 2,331.45 × 458.55
  4. Step 4: Simplify right side
    1,554.12x = 1,069,086.40
  5. Step 5: Solve for x
    x = 1,069,086.40/1,554.12
  6. Step 6: Final answer
    x = 687.90

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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.