Home / 1,318.02-1,977.30-452.13

Finding the Fourth Proportional to 1,318.02, 1,977.30 and 452.13

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Solution

The fourth proportional to 1,318.02, 1,977.30 and 452.13 is: 678.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.02 : 1,977.30 = 452.13 : x
  2. Step 2: Convert to fraction form
    1,318.02/1,977.30 = 452.13/x
  3. Step 3: Cross multiply
    1,318.02x = 1,977.30 × 452.13
  4. Step 4: Simplify right side
    1,318.02x = 893,996.65
  5. Step 5: Solve for x
    x = 893,996.65/1,318.02
  6. Step 6: Final answer
    x = 678.29

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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.