Home / 1,541.55-2,312.70-445.89

Finding the Fourth Proportional to 1,541.55, 2,312.70 and 445.89

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Solution

The fourth proportional to 1,541.55, 2,312.70 and 445.89 is: 668.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.55 : 2,312.70 = 445.89 : x
  2. Step 2: Convert to fraction form
    1,541.55/2,312.70 = 445.89/x
  3. Step 3: Cross multiply
    1,541.55x = 2,312.70 × 445.89
  4. Step 4: Simplify right side
    1,541.55x = 1,031,209.80
  5. Step 5: Solve for x
    x = 1,031,209.80/1,541.55
  6. Step 6: Final answer
    x = 668.94

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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.