Home / 1,210.04-1,815.31-479.62

Finding the Fourth Proportional to 1,210.04, 1,815.31 and 479.62

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Solution

The fourth proportional to 1,210.04, 1,815.31 and 479.62 is: 719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.04 : 1,815.31 = 479.62 : x
  2. Step 2: Convert to fraction form
    1,210.04/1,815.31 = 479.62/x
  3. Step 3: Cross multiply
    1,210.04x = 1,815.31 × 479.62
  4. Step 4: Simplify right side
    1,210.04x = 870,658.98
  5. Step 5: Solve for x
    x = 870,658.98/1,210.04
  6. Step 6: Final answer
    x = 719.53

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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.