Home / 1,147.31-1,583.29-623.34

Finding the Fourth Proportional to 1,147.31, 1,583.29 and 623.34

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Solution

The fourth proportional to 1,147.31, 1,583.29 and 623.34 is: 860.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.31 : 1,583.29 = 623.34 : x
  2. Step 2: Convert to fraction form
    1,147.31/1,583.29 = 623.34/x
  3. Step 3: Cross multiply
    1,147.31x = 1,583.29 × 623.34
  4. Step 4: Simplify right side
    1,147.31x = 986,927.99
  5. Step 5: Solve for x
    x = 986,927.99/1,147.31
  6. Step 6: Final answer
    x = 860.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.