Home / 1,485.18-2,226.22-510.74

Finding the Fourth Proportional to 1,485.18, 2,226.22 and 510.74

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Solution

The fourth proportional to 1,485.18, 2,226.22 and 510.74 is: 765.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.18 : 2,226.22 = 510.74 : x
  2. Step 2: Convert to fraction form
    1,485.18/2,226.22 = 510.74/x
  3. Step 3: Cross multiply
    1,485.18x = 2,226.22 × 510.74
  4. Step 4: Simplify right side
    1,485.18x = 1,137,019.60
  5. Step 5: Solve for x
    x = 1,137,019.60/1,485.18
  6. Step 6: Final answer
    x = 765.58

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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.