Home / 1,214.52-1,821.78-565.80

Finding the Fourth Proportional to 1,214.52, 1,821.78 and 565.80

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Solution

The fourth proportional to 1,214.52, 1,821.78 and 565.80 is: 848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.52 : 1,821.78 = 565.80 : x
  2. Step 2: Convert to fraction form
    1,214.52/1,821.78 = 565.80/x
  3. Step 3: Cross multiply
    1,214.52x = 1,821.78 × 565.80
  4. Step 4: Simplify right side
    1,214.52x = 1,030,763.12
  5. Step 5: Solve for x
    x = 1,030,763.12/1,214.52
  6. Step 6: Final answer
    x = 848.70

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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.