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Finding the Fourth Proportional to 848.28, 1,265.68 and 744.40

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Solution

The fourth proportional to 848.28, 1,265.68 and 744.40 is: 1,110.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.28 : 1,265.68 = 744.40 : x
  2. Step 2: Convert to fraction form
    848.28/1,265.68 = 744.40/x
  3. Step 3: Cross multiply
    848.28x = 1,265.68 × 744.40
  4. Step 4: Simplify right side
    848.28x = 942,174.70
  5. Step 5: Solve for x
    x = 942,174.70/848.28
  6. Step 6: Final answer
    x = 1,110.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.