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Finding the Fourth Proportional to 883.46, 1,216.39 and 750.40

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Solution

The fourth proportional to 883.46, 1,216.39 and 750.40 is: 1,033.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.46 : 1,216.39 = 750.40 : x
  2. Step 2: Convert to fraction form
    883.46/1,216.39 = 750.40/x
  3. Step 3: Cross multiply
    883.46x = 1,216.39 × 750.40
  4. Step 4: Simplify right side
    883.46x = 912,782.79
  5. Step 5: Solve for x
    x = 912,782.79/883.46
  6. Step 6: Final answer
    x = 1,033.19

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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.