Home / 1,526.21-2,289.49-485.85

Finding the Fourth Proportional to 1,526.21, 2,289.49 and 485.85

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Solution

The fourth proportional to 1,526.21, 2,289.49 and 485.85 is: 728.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.21 : 2,289.49 = 485.85 : x
  2. Step 2: Convert to fraction form
    1,526.21/2,289.49 = 485.85/x
  3. Step 3: Cross multiply
    1,526.21x = 2,289.49 × 485.85
  4. Step 4: Simplify right side
    1,526.21x = 1,112,337.27
  5. Step 5: Solve for x
    x = 1,112,337.27/1,526.21
  6. Step 6: Final answer
    x = 728.82

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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.