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Finding the Fourth Proportional to 1,315.71, 1,973.57 and 883.17

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Solution

The fourth proportional to 1,315.71, 1,973.57 and 883.17 is: 1,324.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.71 : 1,973.57 = 883.17 : x
  2. Step 2: Convert to fraction form
    1,315.71/1,973.57 = 883.17/x
  3. Step 3: Cross multiply
    1,315.71x = 1,973.57 × 883.17
  4. Step 4: Simplify right side
    1,315.71x = 1,742,993.40
  5. Step 5: Solve for x
    x = 1,742,993.40/1,315.71
  6. Step 6: Final answer
    x = 1,324.76

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Similar ratio
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1.5x scale

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.